@font-face{font-family:"STEM SAP 72";src:url(/assets/fonts/sap-72/72-Regular-full.woff2) format("woff2");font-weight:400;font-display:swap}@font-face{font-family:"STEM SAP 72";src:url(/assets/fonts/sap-72/72-Italic-full.woff2) format("woff2");font-weight:400;font-style:italic;font-display:swap}@font-face{font-family:"STEM SAP 72";src:url(/assets/fonts/sap-72/72-Semibold-full.woff2) format("woff2");font-weight:500 650;font-display:swap}@font-face{font-family:"STEM SAP 72";src:url(/assets/fonts/sap-72/72-Bold-full.woff2) format("woff2");font-weight:651 900;font-display:swap}:root,html[data-theme=dark] lessons-view .lesson-content{color-scheme:light;--bg:#fff;--panel:#f5f7f7;--ink:#202a2c;--muted:#586769;--line:#dce3e3;--line-strong:#879c9f;--accent:#087b70;--accent-strong:#06655c;--rose:#a42d50;--danger:#b32e43;--brand:#b83255;--media-bg:#fff;--warning-line:#a76b00;--warning-bg:#fff4d9;--code-comment:#526b62;--code-string:#80501f;--code-number:#a44416;--code-keyword:#724080;--code-register:#1759a0;--text-xs:.75rem;--text-sm:.875rem;--text-md:1rem;--text-lg:1.25rem;--text-xl:1.5rem;--text-2xl:1.875rem;--font:"STEM SAP 72","Segoe UI",system-ui,Arial,sans-serif;--radius-sm:4px;--radius-md:8px}html[data-theme=dark]{color-scheme:dark;--bg:#191e20;--panel:#22292b;--ink:#e3eaeb;--muted:#b0c0c3;--line:#3a4649;--line-strong:#879c9f;--accent:#61d0bd;--accent-strong:#148579;--rose:#ff96b3;--danger:#ff9eb1;--warning-line:#d9a43b;--warning-bg:#3a3020;--code-comment:#9fb8ae;--code-string:#e3b77f;--code-number:#f2a37e;--code-keyword:#d5aae6;--code-register:#8fc3f7}*{box-sizing:border-box;letter-spacing:0}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button,input,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.4;cursor:default}:focus-visible{outline:2px solid var(--accent);outline-offset:3px}svg{flex-shrink:0;vertical-align:middle}h1{font-size:var(--text-2xl);line-height:1.25;margin:0;overflow-wrap:anywhere}h2{font-size:var(--text-lg);line-height:1.4;margin:0}h3{font-size:var(--text-lg);margin:7px 0}p{margin:10px 0}small{font-size:var(--text-xs);color:var(--muted)}.muted{color:var(--muted);font-size:var(--text-sm)}.icon{display:inline-grid;place-items:center;flex-shrink:0;width:36px;height:36px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg);color:var(--ink)}.icon:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}main{max-width:1320px;margin:auto;padding:22px 32px 60px;min-height:calc(100vh - 220px)}.page-heading{margin-bottom:26px}.page-heading p{color:var(--muted);font-size:var(--text-md);margin-bottom:0}.item-title{display:flex;gap:10px;align-items:center;min-width:0}.item-title>svg{color:var(--rose)}.item-title h2{font-size:var(--text-lg);min-width:0;overflow-wrap:anywhere}.item-title h2 a{color:var(--ink)}.item-title>small{margin-left:auto;font-variant-numeric:tabular-nums}.hub-band{border-top:1px solid var(--line);margin-top:32px;padding-top:25px}.hub-band>h2{margin-bottom:16px}.course-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}.course-item{display:flex;gap:20px;align-items:center;color:var(--ink);padding:12px 0}.course-item>img{width:150px;height:112px;object-fit:contain;background:#fff}.course-item>div{min-width:0;flex:1}.course-item p{font-size:var(--text-sm);color:var(--muted)}.course-item>svg{color:var(--accent)}.shortcut-links{display:flex;flex-wrap:wrap;gap:12px 24px;margin:20px 0;font-size:var(--text-sm)}.shortcut-links a,.context-link a{display:inline-flex;gap:8px;align-items:center}.pagination{display:flex;justify-content:center;align-items:center;gap:18px;font-size:var(--text-sm);margin-top:24px}.empty-state{padding:35px 0;color:var(--muted)}.empty-state h2{font-size:var(--text-lg);color:var(--ink)}.package-url{display:flex;align-items:center;gap:18px;padding:15px;background:var(--panel);max-width:850px}.package-url code{flex:1;min-width:0;overflow-wrap:anywhere;font:14px/1.7 Consolas,monospace}li{margin:10px 0}.hub-footer{border-top:1px solid var(--line);padding:22px 32px;display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;font-size:var(--text-xs);color:var(--muted)}.hub-footer a{margin-left:auto}.hub-footer strong{color:var(--ink);font-size:var(--text-sm)}#toast{display:none;position:fixed;bottom:20px;left:50%;transform:translate(-50%);background:var(--ink);color:var(--bg);padding:10px 20px;border-radius:var(--radius-sm);z-index:150;font-size:var(--text-sm)}#toast.show{display:block}@media(max-width:1000px){.course-item{gap:14px}.course-item>img{width:110px;height:90px}}@media(max-width:820px){main{padding:20px 22px 44px}}@media(max-width:820px){.course-grid{grid-template-columns:1fr;gap:12px}.course-item>img{width:150px;height:108px}}@media(max-width:820px){.hub-footer{padding:20px 22px}}@media(max-width:520px){main{padding:18px 16px 36px}}@media(max-width:520px){h1{font-size:var(--text-2xl)}}@media(max-width:520px){.page-heading{margin-bottom:22px}.course-item>img{width:84px;height:80px}.course-item h3{font-size:var(--text-md)}.course-item p{font-size:var(--text-sm)}.course-item>svg{display:none}}@media(max-width:520px){.hub-footer a{margin-left:0}}@media(max-width:520px){.hub-band{margin-top:25px;padding-top:22px}.package-url{gap:10px}.package-url code{font-size:var(--text-xs)}}@media print{.hub-toolbar,.hub-footer,.filters,.pagination{display:none}main{padding:0}}.view-switch{display:flex;gap:5px}.view-switch [aria-pressed=true]{color:var(--accent);border-color:var(--accent);background:var(--panel)}.preview-label{position:absolute;bottom:0;left:0;right:0;background:var(--bg);border-top:1px solid var(--line);padding:5px 10px;color:var(--muted);font-size:var(--text-xs)}.github-references{padding:20px 0;border-top:1px solid var(--line)}.github-references h2{font-size:var(--text-lg);display:flex;align-items:center;gap:8px}.github-references .shortcut-links{margin:15px 0 8px;gap:12px 25px}.github-references .shortcut-links svg:last-child{width:14px}.github-references .muted{font-size:var(--text-xs);margin:0}.repository-row{padding:18px 0;border-bottom:1px solid var(--line)}.repository-row>a{font-size:var(--text-md);font-weight:600;overflow-wrap:anywhere}.repository-row>small{margin-left:20px;display:inline-block}.repository-row p{font-size:var(--text-sm);color:var(--muted);max-width:85ch;margin:7px 0 0}@media(max-width:520px){.repository-row>small{display:block;margin:6px 0 0}}.home-gallery{width:100%;min-width:0}.home-stage{position:relative;height:clamp(200px,calc(100svh - 390px),640px);overflow:hidden;touch-action:pan-y pinch-zoom}.home-slide{position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:contain;opacity:0;transition:opacity .7s cubic-bezier(.4,0,.2,1);pointer-events:none}.home-slide.is-active{opacity:1}.home-gallery .home-arrow{position:absolute;z-index:1;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;background:var(--bg);box-shadow:0 1px 6px #0002;color:var(--ink)}.home-prev{left:8px}.home-next{right:8px}.home-controls{display:flex;gap:16px;align-items:center;min-height:48px}.home-indicators{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:8px;flex:1;min-width:0}.home-indicator{border:0;background:transparent;height:44px;min-width:0;padding:0;display:flex;align-items:center}.home-indicator>span{display:block;width:100%;height:4px;background:var(--line);overflow:hidden;border-radius:var(--radius-sm)}.home-indicator b{display:block;width:100%;height:100%;background:var(--accent);transform:scaleX(var(--progress,0));transform-origin:left}.home-indicator[aria-current]>span{height:6px;background:color-mix(in srgb,var(--accent) 35%,var(--line))}.home-indicator:hover>span{background:var(--muted)}.home-controls [data-home-toggle]{width:44px;height:44px;flex:none}.home-status{font-size:var(--text-sm);margin:0}.home-status:empty{display:none}@media(max-width:520px){.home-stage{height:auto;aspect-ratio:4/3;min-height:0}.home-controls{gap:10px}.home-indicators{gap:6px}.home-gallery .home-arrow{width:36px;height:36px}.home-prev{left:2px}.home-next{right:2px}}@media(prefers-reduced-motion:reduce){.home-slide{transition:none}}.course-media-placeholder{display:flex;align-items:center;justify-content:center;flex:none;width:170px;height:112px;background:var(--panel);color:var(--muted)}.course-media-placeholder>svg{width:32px;height:32px}@media(max-width:1000px){.course-media-placeholder{width:110px;height:90px}}@media(max-width:820px){.course-media-placeholder{width:150px;height:108px}}@media(max-width:520px){.course-media-placeholder{width:84px;height:80px}}.route-loading{display:grid;gap:14px;min-height:168px;max-width:740px;padding:24px 0}.route-loading span{display:block;height:16px;background:var(--line,var(--line));border-radius:var(--radius-sm);opacity:.55}.route-loading span:nth-child(2){width:85%}.route-loading span:nth-child(3){width:60%}body[data-stemkids-section] :is(h1,h2,h3,[data-anchor-target]){scroll-margin-top:calc(var(--stemkids-height) + 95px)}.test-marker{display:flex;flex-wrap:wrap;gap:6px 24px;padding:10px 14px;border-bottom:1px solid var(--line,var(--border,var(--line)));background:var(--panel,var(--surface-subtle,var(--panel)));font:var(--text-xs)/1.5 var(--font);color:var(--muted,var(--muted))}.test-marker strong{font-weight:600;color:var(--ink,var(--ink));overflow-wrap:anywhere}.test-marker[data-tested=yes] span:first-child strong{color:var(--accent,var(--teal,var(--accent)))}:is(.account-dialog,.draft-dialog){box-sizing:border-box;width:min(680px,calc(100% - 24px));max-width:none;max-height:calc(100dvh - 24px);margin:auto;padding:0;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--bg);color:var(--ink);font:var(--text-md)/1.5 var(--font);letter-spacing:0;overflow:auto}:is(.account-dialog,.draft-dialog)::backdrop{background:#00000075}:is(.account-dialog,.draft-dialog) *{box-sizing:border-box;letter-spacing:0;min-width:0}:is(.account-dialog,.draft-dialog) header{position:static;display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--line);height:auto;background:var(--bg);color:var(--ink)}:is(.account-dialog,.draft-dialog) h2{margin:0;flex:1;font-size:var(--text-lg);line-height:1.3;overflow-wrap:anywhere}:is(.account-dialog,.draft-dialog) h3{font-size:var(--text-md);margin:20px 0 8px}:is(.account-dialog,.draft-dialog) form{display:grid;gap:14px}:is(.account-dialog,.draft-dialog) label{display:grid;gap:6px;font-size:var(--text-sm);font-weight:600;color:var(--ink)}:is(.account-dialog,.draft-dialog) input,:is(.account-dialog,.draft-dialog) select{width:100%;min-height:42px;border:1px solid var(--line-strong);border-radius:var(--radius-sm);padding:8px 10px;font:inherit;background:var(--bg);color:var(--ink)}:is(.account-dialog,.draft-dialog) button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;padding:7px 11px;border:1px solid var(--line-strong);border-radius:var(--radius-sm);font:inherit;color:var(--ink);background:var(--bg);cursor:pointer;white-space:normal;overflow-wrap:anywhere}:is(.account-dialog,.draft-dialog) button svg{width:18px;height:18px;flex-shrink:0}:is(.account-dialog,.draft-dialog) button[type=submit]{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}:is(.account-dialog,.draft-dialog) button:disabled{opacity:.55;cursor:wait}:is(.account-dialog,.draft-dialog) .account-icon{width:38px;height:38px;flex-shrink:0;padding:8px}.account-tabs,.account-links,.account-row-actions{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 16px}:is(.account-dialog,.draft-dialog) :focus-visible,.stemkids-account-trigger:focus-visible{outline:2px solid var(--accent));outline-offset:3px}@media(max-width:520px){.has-registration{gap:8px}}@media(max-width:520px){:is(.account-dialog,.draft-dialog) header{padding:12px 14px}}@media print{:is(.account-dialog,.draft-dialog),.stemkids-account-trigger{display:none}}:is(.account-dialog,.draft-dialog) .account-consent{display:flex;align-items:flex-start;gap:10px}:is(.account-dialog,.draft-dialog) .account-consent input{width:18px;height:18px;flex:0 0 18px;margin-top:4px}:is(.account-dialog,.draft-dialog) [data-guardian-fields][hidden]{display:none}.catalog-markdown{max-width:960px;line-height:1.65;overflow-wrap:anywhere;margin:20px 0}.catalog-markdown h1{font-size:var(--text-2xl)}.catalog-markdown h2{font-size:var(--text-xl)}.catalog-markdown h3{font-size:var(--text-lg)}.catalog-markdown img,.catalog-file img{max-width:100%;height:auto;max-height:720px;object-fit:contain}.catalog-markdown table{border-collapse:collapse;display:block;overflow:auto;max-width:100%}.catalog-markdown td,.catalog-markdown th{border:1px solid var(--line,var(--line));padding:8px}.catalog-markdown pre,.catalog-file pre,.catalog-diff{white-space:pre-wrap;overflow-wrap:anywhere;max-width:100%;padding:14px;background:var(--panel,var(--panel));font:13px/1.6 Consolas,monospace}.workflow-tabs a{padding:10px 14px}.workflow-tabs a[aria-current=page]{border-bottom:3px solid var(--accent)}@media(max-width:520px){.catalog-markdown h1{font-size:var(--text-xl)}.catalog-markdown h2{font-size:var(--text-lg)}.catalog-markdown pre{padding:10px}}.content-shell pre{min-width:0;max-width:100%;overflow-x:auto}#legal-nav,.legal-actions,.legal-footer nav{display:flex;flex-wrap:wrap;gap:16px;align-items:center}.legal-footer a,#legal-main a{color:var(--accent);text-underline-offset:3px}.page-sections{display:flex;flex-wrap:wrap;gap:8px 24px;padding:12px 0;border-block:1px solid var(--line);margin:0 0 20px;font-size:var(--text-sm)}.page-sections a{padding:4px 0}body[data-stemkids-section=hub] :is(.board-profile-section,.board-documents,.catalog-browser){scroll-margin-top:calc(var(--stemkids-height) + 20px)}body[data-stemkids-section=hub] :is(.project-prose,.catalog-markdown,.wiki-document){line-height:1.7}body[data-stemkids-section=hub] :is(.project-prose,.catalog-markdown,.wiki-document)>:is(p,ul,ol){max-width:80ch}body[data-stemkids-section=hub] .catalog-markdown :is(h2,h3){margin-top:28px;margin-bottom:12px}body[data-stemkids-section=hub] :is(.workflow-table,.resource-table table,.catalog-markdown table) th{font-size:var(--text-sm);background:var(--panel);color:var(--muted);font-weight:600}body[data-stemkids-section=hub] :is(.workflow-table,.resource-table table,.catalog-markdown table) :is(th,td){padding:12px}body[data-stemkids-section=hub] :is(.workflow-table,.resource-table table,.catalog-markdown table) tbody tr:nth-child(2n){background:var(--panel)}body[data-stemkids-section=hub] .workflow-summary .catalog-markdown{margin:0;font-size:var(--text-md)}body[data-stemkids-section=hub] .workflow-summary .catalog-markdown>p{margin:0}.workflow-progress{display:block;width:100%;max-width:160px;height:6px;accent-color:var(--accent)}@media(max-width:520px){.page-sections{gap:8px 20px;font-size:var(--text-sm)}}@media print{.catalog-filters,.catalog-search,.selected-filters,.page-sections{display:none!important}}.field{display:grid;gap:6px;font-size:var(--text-sm);color:var(--muted);min-width:0;margin:0 0 16px}.field :is(input,textarea,select){width:100%;min-width:0;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg);color:var(--ink);font:inherit;min-height:42px}.field textarea{resize:vertical;line-height:1.6}.checkbox{display:flex;gap:10px;align-items:center;font-size:var(--text-sm)}.checkbox input{width:18px;height:18px}.grow{flex:1}.surface-controls{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:18px 0;flex-wrap:wrap}.surface-tabs{display:flex;gap:0;overflow-x:auto;border-bottom:1px solid var(--line);scrollbar-width:thin}.surface-tabs button{border:0;border-bottom:3px solid transparent;background:transparent;padding:12px 20px;color:var(--muted);white-space:nowrap;min-height:44px}.surface-tabs button[aria-current]{border-color:var(--accent);color:var(--ink);font-weight:600}.surface-tabs button span{margin-left:6px;font-size:var(--text-xs)}.back-link{display:inline-block;margin:0 0 16px;font-size:var(--text-sm)}.preserve-lines,.discussion-body{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.7}.task-card{padding:22px 0;border-bottom:1px solid var(--line)}.task-card>header{display:flex;align-items:center;flex-wrap:wrap;gap:10px 16px;margin-bottom:12px;font-size:var(--text-sm);color:var(--muted)}.task-card>header>small{margin-left:auto}.task-card h3{margin:0 0 8px;font-size:var(--text-lg)}.task-card p{font-size:var(--text-sm)}.task-actions{display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:18px;align-items:center}.state-chip{display:inline-flex;padding:3px 8px;border-radius:var(--radius-sm);background:var(--panel);color:var(--muted);font-size:var(--text-xs)}.state-chip[data-state=doing]{color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,var(--bg))}.state-chip[data-state=blocked],.blocked-reason{color:var(--rose)}.state-chip[data-state=done]{color:var(--accent)}.task-history{margin-top:14px}.task-card details>summary{cursor:pointer;font-size:var(--text-sm);padding:8px 0;color:var(--muted)}.discussion-list{border-top:1px solid var(--line)}.discussion-post{border-bottom:1px solid var(--line);padding:20px 0}.discussion-post>header{display:flex;gap:8px 20px;align-items:center;flex-wrap:wrap;font-size:var(--text-sm)}.discussion-post time{color:var(--muted);font-size:var(--text-xs)}.discussion-post h3{margin-top:14px;font-size:var(--text-lg)}.discussion-post .discussion-body{margin:12px 0;font-size:var(--text-md)}.discussion-title{margin:0 0 18px}.discussion-title h2{margin-bottom:8px}.discussion-composer{margin-top:24px;padding:22px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm)}.discussion-composer h3{margin:0 0 16px}.composer-actions{display:flex;gap:12px;justify-content:flex-end;align-items:center;flex-wrap:wrap;margin-top:16px}.composer-actions small{margin-right:auto}.inline-editor{margin-top:28px;padding:24px;border:1px solid var(--accent);border-radius:var(--radius-sm);background:var(--bg);scroll-margin-top:calc(var(--stemkids-height) + 20px)}.inline-editor h2{margin-bottom:20px}.inline-editor :is(details,summary){margin-bottom:16px}.inline-editor summary,.moderation summary{cursor:pointer}.inline-editor .source-editor{font:13px/1.6 Consolas,monospace}.form-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}.moderation{margin-top:12px;font-size:var(--text-sm);color:var(--muted)}.moderation .field{margin-top:12px}.notice.error{color:var(--rose);border-left:3px solid var(--rose)}@media(max-width:820px){.surface-tabs button{padding-inline:14px}}@media(max-width:520px){.task-card>header>small{margin-left:0;flex-basis:100%}}@media(max-width:520px){.inline-editor,.discussion-composer{padding:16px}.form-columns{grid-template-columns:1fr;gap:0}}@media(max-width:520px){.discussion-post time{flex-basis:100%}}app-root{display:block}.table-scroll{max-width:100%;overflow-x:auto}.reference-body pre{overflow:auto;max-width:100%;padding:16px;background:var(--panel);font:13px/1.6 Consolas,monospace}.file-draft{border-block:1px solid var(--line);padding-block:16px;margin-block:20px}.home-body{margin:24px 0}.item-title>ui-icon,.result-type>ui-icon{color:var(--rose)}.item-title h2{flex:1}.course-item>ui-icon,.result-row>ui-icon{color:var(--accent)}.course-media-placeholder ui-icon svg{width:32px;height:32px}.notice{padding:16px;border:1px solid var(--line);margin:0 0 20px;background:var(--panel)}.text-button{background:transparent;color:var(--accent);border:0;padding:6px 0;text-align:left;text-decoration:underline;text-underline-offset:3px}.card-edit{margin-top:12px;font-size:var(--text-sm)}.loading{padding:20px 0;color:var(--muted)}.gallery-message{position:absolute;inset:0;display:grid;place-items:center;margin:0;color:var(--muted)}.video-consent{display:grid;place-items:center;background:var(--panel);border:1px solid var(--line);aspect-ratio:16/9}.video-caption{display:flex;gap:12px;justify-content:space-between;margin-top:8px;font-size:var(--text-sm);color:var(--muted)}.file-list{list-style:none;padding:0}.file-list li{display:flex;gap:10px;align-items:center;overflow-wrap:anywhere}.code-preview{border:1px solid var(--line);margin-top:24px;min-width:0}.code-preview summary{padding:10px 14px;cursor:pointer;background:var(--panel)}.code-preview pre{margin:0;padding:18px;overflow:auto;font:13px/1.65 Consolas,monospace}.account-links{display:flex;align-items:center;gap:20px;margin-top:18px;font-size:var(--text-sm);flex-wrap:wrap}.editor-dialog{width:min(1040px,calc(100% - 32px));max-width:none;max-height:calc(100dvh - 32px);padding:0;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--bg);color:var(--ink)}.editor-dialog::backdrop{background:#0008}.editor-dialog>header{display:flex;justify-content:space-between;gap:20px;position:sticky;top:0;z-index:3;padding:18px 24px;background:var(--bg);border-bottom:1px solid var(--line)}.editor-dialog h2{font-size:var(--text-lg)}.editor-dialog form{padding:20px 24px 0}.editor-dialog fieldset{border:0;padding:0;margin:0;min-width:0}.editor-dialog label{display:grid;gap:6px;font-size:var(--text-sm);margin:0 0 18px}.editor-dialog :is(input,textarea,select){width:100%;min-width:0;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg);color:var(--ink);font:inherit}.editor-dialog textarea{resize:vertical;min-height:90px;line-height:1.55}.editor-dialog .source-editor{font:13px/1.6 Consolas,monospace;tab-size:4}.editor-dialog .body-editor{min-height:280px}.editor-actions{display:flex;gap:12px;align-items:center;justify-content:flex-end;padding:14px 0;position:sticky;bottom:0;background:var(--bg);border-top:1px solid var(--line);z-index:2}.editor-actions>span{margin-right:auto;font-size:var(--text-sm);color:var(--muted)}.editor-state{padding:14px 24px;margin:0;background:var(--panel)}.editor-state.error{color:var(--rose);border-left:3px solid var(--rose)}.editor-file{display:flex;gap:14px;align-items:center;border-bottom:1px solid var(--line);padding:12px 0}.editor-file label{flex:1;margin:0;min-width:0;overflow-wrap:anywhere}.editor-file small{white-space:nowrap}.editor-files,.advanced-fields{border-top:1px solid var(--line);margin-top:24px;padding:16px 0}.editor-history{padding:0 24px 20px}.editor-dialog summary{cursor:pointer;padding:8px 0}@media(max-width:520px){.video-caption{flex-wrap:wrap}.course-item>ui-icon{display:none}}@media(max-width:520px){.editor-dialog{width:100%;max-height:100dvh;height:100dvh;border:0;border-radius:0;margin:0}.editor-dialog>header{padding:12px 16px}.editor-dialog form{padding:16px 16px 0}.editor-actions{flex-wrap:wrap;padding-bottom:max(12px,env(safe-area-inset-bottom))}.editor-actions>span{flex-basis:100%}.editor-actions>button{flex:1;justify-content:center;min-height:44px}.editor-history{padding:0 16px 20px}.editor-file{flex-wrap:wrap}}[hidden]{display:none!important}.record-dialog{width:min(900px,calc(100vw - 28px));max-height:92dvh;border:1px solid var(--line);border-radius:var(--radius-md);padding:0;background:var(--bg);color:var(--ink);box-shadow:0 24px 100px #0005}.record-dialog::backdrop{background:#152a3e80;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.record-dialog-bar{position:sticky;top:0;z-index:4;display:flex;justify-content:space-between;align-items:center;gap:16px;background:var(--bg);border-bottom:1px solid var(--line);padding:12px 20px}.record-dialog .inline-editor{margin:0;border:0;border-radius:0}.record-dialog .notice{margin:12px 20px}.record-dialog .composer-actions{position:sticky;bottom:-24px;z-index:3;background:var(--bg);padding:14px 0;border-top:1px solid var(--line)}@media(max-width:820px){.record-dialog{width:calc(100vw - 12px);max-height:96dvh}.record-dialog-bar{padding:10px}}@media(max-width:820px){.record-dialog .composer-actions{bottom:-16px}}.record-fields{border:0;margin:0;padding:0;min-width:0}.lesson-page :is(button,a,select,textarea,input):focus-visible{outline:3px solid var(--accent);outline-offset:3px}.lesson-page #lesson-self-check :is(input:not([type=radio]),textarea,select){font:inherit;max-width:100%;width:100%;padding:10px;border:1px solid var(--line-strong);border-radius:var(--radius-sm)}.lesson-page .lesson-content :is(button,select,input){font-family:var(--font)}@media(max-width:520px){.lesson-page .lesson-content #lesson-bom :is(table,tbody){display:block;width:100%;min-width:0}}.lesson-page .netlist-table :is(th,td){text-align:left;vertical-align:top;padding:12px;border-bottom:1px solid var(--line);overflow-wrap:anywhere}#breadcrumb a,.legal-footer a,.video-caption a{display:inline-flex;align-items:center;min-height:24px}.home-intro{display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;margin:0 0 20px}.home-lead{flex:1 1 420px;max-width:72ch;margin:0;font-size:var(--text-md);line-height:1.55;color:var(--ink)}.home-start{flex:none;text-decoration:none}.lesson-page .lesson-content :is(p,ul,ol,blockquote),.lesson-code-explanation :is(p,ul,ol),.wiki-document :is(p,ul,ol,blockquote),.home-body :is(p,ul,ol){max-width:72ch}.lesson-page .lesson-content :is(td,th) :is(p,ul,ol){max-width:none}.page-host:has(>section-tabs) :is(#catalog-results,.catalog-browser .project-results){scroll-margin-top:calc(var(--stemkids-height) + 58px)}.page-host:has(>section-tabs) .lesson-page :is([id],.lesson-editor){scroll-margin-top:calc(var(--stemkids-height,100px) + var(--lesson-tabs-height) + 82px)}.section-tabs a:focus-visible,.catalog-topics a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.catalog-sort,.pagination-select{display:inline-flex;align-items:center;gap:8px;font-size:var(--text-sm);color:var(--muted)}.catalog-sort select,.pagination-select select{min-height:36px;padding:4px 8px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg);color:var(--ink);font:inherit}.pagination{flex-wrap:wrap;gap:8px 16px}.pagination .text-button{min-height:36px}.data-list{border-top:1px solid var(--line);margin:8px 0 24px}.data-head,.data-row{display:grid;grid-template-columns:var(--cols,minmax(0,1fr));column-gap:16px;align-items:center;padding:10px 8px;border-bottom:1px solid var(--line)}.data-head{padding:8px;font-size:var(--text-sm);font-weight:600;color:var(--muted)}.data-row{color:var(--ink);min-width:0}.data-row:hover{background:var(--panel);text-decoration:none}.data-row:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.data-row>*{min-width:0}.data-title{display:block;font-weight:600;color:var(--accent)}.data-sub{display:block;font-size:var(--text-sm);color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.data-head .num,.data-row .num{text-align:right;font-variant-numeric:tabular-nums}@media(max-width:820px){.data-head{display:none}.data-row{grid-template-columns:minmax(0,1fr);row-gap:2px;padding:10px 0}.data-row .num{text-align:left}.data-row [data-label]:before{content:attr(data-label) ": ";color:var(--muted);font-size:var(--text-sm)}.data-row>[data-label]{order:1}}.filter-bar :is(select,input){height:38px;width:100%}:is(.result-row,.book-item,.data-row,.course-item,.repository-row,.quiz-question fieldset){transition:background-color .15s,box-shadow .15s,border-color .15s}:is(.result-row,.book-item,.data-row,.course-item,.repository-row,.quiz-question fieldset):is(:hover,:focus-within){background:var(--panel);border-radius:var(--radius-md);box-shadow:0 0 0 1px var(--line),0 2px 10px #00000014;border-bottom-color:transparent;position:relative;z-index:1;text-decoration:none}:is(.result-row,.book-item,.data-row,.course-item,.repository-row):is(:hover,:focus-within) :is(h2,h3,a){text-decoration:none}.catalog-markdown tbody tr{transition:background-color .15s,box-shadow .15s}.catalog-markdown tbody tr:is(:hover,:focus-within){position:relative;z-index:1;box-shadow:0 0 0 1px var(--line),0 2px 10px #00000014;border-radius:var(--radius-md)}body[data-stemkids-section=hub] .catalog-markdown tbody tr:is(:hover,:focus-within),body[data-stemkids-section=hub] .catalog-markdown tbody tr:is(:hover,:focus-within) td{background:color-mix(in srgb,var(--accent) 7%,var(--bg))}.quiz-option:hover{background:var(--bg);border-color:var(--line)}@media(prefers-reduced-motion:reduce){:is(.result-row,.book-item,.data-row,.course-item,.repository-row,.quiz-question fieldset),.catalog-markdown tbody tr{transition:none}}.catalog-markdown:has(img[src*="/vk-lessons-list-"]){max-width:1240px}.catalog-markdown table:has(img[src*="/vk-lessons-list-"]) td{vertical-align:middle}.catalog-markdown table:has(img[src*="/vk-lessons-list-"]) td:is(:nth-child(1),:nth-child(4)) img{width:168px;height:112px;object-fit:cover;max-width:none;border-radius:var(--radius-sm,4px)}.catalog-markdown table:has(img[src*="/vk-lessons-list-"]) td:nth-child(3) img{width:220px;height:116px;object-fit:contain;max-width:none;background:#fff;border-radius:var(--radius-sm,4px)}@media(max-width:720px){.catalog-markdown table:has(img[src*="/vk-lessons-list-"]),.catalog-markdown table:has(img[src*="/vk-lessons-list-"]) tbody{display:block;overflow:visible}.catalog-markdown table:has(img[src*="/vk-lessons-list-"]) thead{display:none}.catalog-markdown table:has(img[src*="/vk-lessons-list-"]) tr{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:12px;border:1px solid var(--line);border-top:0}.catalog-markdown table:has(img[src*="/vk-lessons-list-"]) tr:first-child{border-top:1px solid var(--line)}.catalog-markdown table:has(img[src*="/vk-lessons-list-"]) td{border:0;padding:0}.catalog-markdown table:has(img[src*="/vk-lessons-list-"]) td img{width:100%!important;height:auto!important;aspect-ratio:3/2;object-fit:cover}.catalog-markdown table:has(img[src*="/vk-lessons-list-"]) td:nth-child(3) img{object-fit:contain}}body{margin:0;font:var(--text-md)/1.55 var(--font);background:var(--bg);color:var(--ink)}.hub-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;max-width:1320px;padding:14px 32px;margin:auto;border-bottom:1px solid var(--line)}.hub-toolbar form{display:flex;align-items:center;gap:12px;max-width:680px;flex:1}.hub-toolbar input{width:100%;min-width:0;border:0;background:var(--bg);color:var(--ink);outline:0;font-size:var(--text-md)}#breadcrumb{display:flex;gap:12px;font-size:var(--text-sm);color:var(--muted);margin-bottom:23px}.skip{position:fixed;z-index:200;left:12px;top:-100px;background:var(--bg);padding:12px}.skip:focus{top:5px}@media(max-width:820px){.hub-toolbar{padding:12px 22px}}@media(max-width:520px){.hub-toolbar{padding:10px 16px}.hub-toolbar input{font-size:var(--text-sm)}}.stemkids-home{max-width:1280px;margin:0 auto}.stemkids-home>header{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:12px}.stemkids-home h1{font-size:var(--text-xl);margin:0}.stemkids-home [data-home-count]{font-size:var(--text-sm);font-variant-numeric:tabular-nums;min-width:42px;text-align:right;color:var(--muted)}.stemkids-home>nav{display:flex;gap:24px;flex-wrap:wrap;padding:18px 0;border-bottom:1px solid var(--line)}.stemkids-home-video{padding:20px 0;max-width:960px;margin:auto}:root{--stemkids-height:54px}body[data-stemkids-section]{padding-top:var(--stemkids-height)}.stemkids-global{position:fixed;inset:0 0 auto;z-index:100;height:var(--stemkids-height);display:flex;gap:28px;align-items:center;padding:0 28px;background:var(--bg);color:var(--ink);border-bottom:1px solid var(--line);font:var(--text-sm)/1.3 var(--font);box-sizing:border-box;letter-spacing:0}.stemkids-global *{box-sizing:border-box;letter-spacing:0}.stemkids-brand{display:flex;align-items:center;gap:10px;flex-shrink:0}.stemkids-global .stemkids-brand,.stemkids-global .stemkids-brand:hover{color:inherit;text-decoration:none}.stemkids-brand strong{font-size:var(--text-lg)}.stemkids-mark{display:grid;place-items:center;width:28px;height:28px;background:var(--brand);color:#fff;border-radius:var(--radius-sm);font-size:var(--text-lg);font-weight:700}.stemkids-global nav{display:flex;gap:22px;align-items:center;min-width:0}.stemkids-global nav a{color:inherit;text-decoration:none;padding:17px 0 14px;border-bottom:3px solid transparent;white-space:nowrap;font-size:var(--text-sm)}.stemkids-global nav a[aria-current]{border-color:var(--brand);font-weight:600}.stemkids-find{margin-left:auto;color:var(--accent);font-size:var(--text-sm);text-decoration:none}.stemkids-global a:hover{text-decoration:underline}.stemkids-global a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}html[data-theme=dark] .stemkids-global{background:var(--bg);color:var(--ink);border-color:var(--line)}html[data-theme=dark] .stemkids-find{color:var(--accent)}:is(body[data-stemkids-section=renesas],body[data-stemkids-section=books])>header{top:var(--stemkids-height)}:is(body[data-stemkids-section=renesas],body[data-stemkids-section=books]) #sidebar{top:calc(var(--stemkids-height) + 76px);height:calc(100vh - var(--stemkids-height) - 76px)}:is(body[data-stemkids-section=renesas],body[data-stemkids-section=books]) .toc{top:calc(var(--stemkids-height) + 76px);max-height:calc(100vh - var(--stemkids-height) - 76px);overflow:auto}:is(body[data-stemkids-section=renesas],body[data-stemkids-section=books]) #scrim{top:calc(var(--stemkids-height) + 76px)}body[data-stemkids-section=lvgl] .topbar{top:var(--stemkids-height)}body[data-stemkids-section=lvgl] .sidebar{top:calc(var(--stemkids-height) + var(--topbar-height))}body[data-stemkids-section=lvgl] .toc-panel{top:calc(var(--stemkids-height) + var(--topbar-height) + 30px);max-height:calc(100vh - var(--stemkids-height) - var(--topbar-height) - 48px)}body[data-stemkids-section=lvgl] .page-overlay{top:calc(var(--stemkids-height) + var(--topbar-height))}@media(max-width:820px){:root{--stemkids-height:90px}.stemkids-global{padding:9px 16px 0;gap:0;display:grid;grid-template-columns:1fr auto;grid-template-rows:32px 48px}.stemkids-brand strong{font-size:var(--text-lg)}.stemkids-mark{width:25px;height:25px;font-size:var(--text-md)}.stemkids-global nav{grid-row:2;grid-column:1/-1;gap:22px;overflow-x:auto;scrollbar-width:none;height:48px}.stemkids-global nav a{padding:13px 0 11px;font-size:var(--text-sm)}.stemkids-find{grid-row:1;grid-column:2}}@media(max-width:820px){:is(body[data-stemkids-section=renesas],body[data-stemkids-section=books]) #sidebar{top:calc(var(--stemkids-height) + 66px);height:calc(100vh - var(--stemkids-height) - 66px)}:is(body[data-stemkids-section=renesas],body[data-stemkids-section=books]) #scrim{top:calc(var(--stemkids-height) + 66px)}}@media(max-width:520px){.stemkids-global nav{gap:16px}.stemkids-global{padding-inline:12px}}@media print{body[data-stemkids-section]{padding-top:0}.stemkids-global{display:none}}:root{--stemkids-height:94px}.stemkids-global{display:grid;grid-template-columns:auto 1fr auto;grid-template-rows:54px 39px;gap:0 28px}.stemkids-global .stemkids-primary{height:54px}.stemkids-global .stemkids-topics{grid-column:1/-1;grid-row:2;display:flex;justify-content:flex-start;gap:28px;height:39px;border-top:1px solid var(--line);overflow:visible}.stemkids-global .stemkids-topics a{font-size:var(--text-sm);padding:10px 0 8px}.stemkids-global .stemkids-topics [aria-current]{color:var(--rose)}html[data-theme=dark] .stemkids-topics{border-color:var(--line)}html[data-theme=dark] .stemkids-topics [aria-current]{color:var(--rose)}@media(max-width:820px){:root{--stemkids-height:150px}.stemkids-global{grid-template-columns:1fr auto;grid-template-rows:32px 48px 60px;padding-top:9px;gap:0}.stemkids-global .stemkids-primary{grid-column:1/-1;grid-row:2;height:48px}.stemkids-global .stemkids-topics{grid-row:3;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-template-rows:28px 28px;gap:0 8px;align-items:center;height:60px;min-width:0}.stemkids-global .stemkids-topics a{font-size:var(--text-xs);padding:5px 0 3px;text-align:center;border-bottom-width:2px;white-space:nowrap}.stemkids-global .stemkids-find{grid-row:1;grid-column:2}.stemkids-global .stemkids-brand{grid-row:1;grid-column:1}}.stemkids-global [data-stemkids-nav=radio]{font-weight:600;color:var(--rose)}html[data-theme=dark] .stemkids-global [data-stemkids-nav=radio]{color:var(--rose)}@media(min-width:821px)and (max-width:1000px){.stemkids-global{gap:0 18px;padding-inline:18px}.stemkids-global .stemkids-primary{gap:14px}.stemkids-global .stemkids-primary a{font-size:var(--text-sm)}.stemkids-brand strong{font-size:var(--text-lg)}.stemkids-find{font-size:var(--text-xs)}}.stemkids-actions{display:flex;align-items:center;gap:18px;grid-column:3;grid-row:1}.stemkids-github{font-size:var(--text-sm);color:inherit;text-decoration:none}.stemkids-actions .stemkids-find{margin-left:0}@media(max-width:820px){.stemkids-actions{grid-column:2;grid-row:1;gap:14px}.stemkids-github,.stemkids-find{font-size:var(--text-xs)}}.stemkids-account-trigger{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:34px;height:34px;padding:5px 8px;border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:transparent;color:inherit;font:inherit;cursor:pointer}.stemkids-account-trigger svg{width:18px;height:18px;flex-shrink:0}.stemkids-register-trigger{border-color:var(--accent);color:var(--accent);font-weight:600;white-space:nowrap}.stemkids-register-trigger[hidden]{display:none}html[data-theme=dark] .account-mail [data-mail-status=failed],html[data-theme=dark] .account-mail [data-mail-status=unavailable]{color:var(--danger)}html[data-theme=dark] .stemkids-register-trigger{border-color:var(--accent);color:var(--accent)}html[data-theme=dark] .account-status{color:var(--accent)}html[data-theme=dark] .account-status[data-error=true]{color:var(--danger)}@media(max-width:1000px){.stemkids-account-trigger span{display:none}.stemkids-actions{gap:10px}}@media(max-width:820px){.stemkids-account-trigger span{display:inline}.stemkids-account-trigger{gap:4px;padding-inline:6px}}@media(min-width:821px)and (max-width:1360px){.stemkids-global .stemkids-primary{overflow-x:auto;scrollbar-width:none}.stemkids-actions{gap:10px}}@media(max-width:520px){.has-registration .stemkids-github,.has-registration .stemkids-find{display:none}.has-registration .stemkids-account-trigger:not(.stemkids-register-trigger) span{display:none}}@media(max-width:520px){.stemkids-actions{gap:7px}.stemkids-brand{gap:6px}.stemkids-brand strong{font-size:var(--text-md)}}.legal-footer{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;border-top:1px solid var(--line);margin-top:36px;padding:24px max(20px,calc((100% - 1376px)/2));font-size:var(--text-sm);line-height:1.6}.legal-footer address{font-style:normal;max-width:620px;overflow-wrap:anywhere}@media(max-width:520px){.legal-footer{padding:20px 16px}}.stemkids-global{padding-inline:max(24px,calc((100% - 1376px)/2))}.stemkids-global .stemkids-topics{gap:26px}.stemkids-global .stemkids-topics a{color:var(--muted)}.stemkids-global .stemkids-topics a[aria-current]{color:var(--rose)}html[data-theme=dark] .stemkids-global .stemkids-topics a{color:var(--muted)}html[data-theme=dark] .stemkids-global .stemkids-topics a[aria-current]{color:var(--rose)}body[data-stemkids-section=hub] main{max-width:1440px;padding:20px 32px 56px}body[data-stemkids-section=hub] .hub-toolbar{max-width:1440px;padding:10px 32px;gap:12px;border:0}body[data-stemkids-section=hub] .hub-toolbar form{max-width:740px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);padding:0 6px 0 12px}body[data-stemkids-section=hub] .hub-toolbar input{background:transparent;height:40px}body[data-stemkids-section=hub] .hub-toolbar form:focus-within{outline:2px solid var(--accent);outline-offset:2px}body[data-stemkids-section=hub] .hub-toolbar form .icon{border:0;background:transparent}body[data-stemkids-section=hub] #breadcrumb{margin-bottom:14px;flex-wrap:wrap;gap:6px 10px}body[data-stemkids-section=hub] .page-heading{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px 24px;margin:0 0 22px}body[data-stemkids-section=hub] .page-title{flex:1 1 360px;min-width:0}body[data-stemkids-section=hub] .page-heading h1{font-size:var(--text-2xl);line-height:1.3}body[data-stemkids-section=hub] .page-heading p{max-width:80ch;margin:7px 0 0}body[data-stemkids-section=hub] .page-heading>h1{flex-basis:100%}body[data-stemkids-section=hub] .page-heading>p{flex-basis:100%;margin-top:0}body[data-stemkids-section=hub] .page-heading>.catalog-actions{margin:0;gap:8px}body[data-stemkids-section=hub] #view>.author-actions{margin-bottom:22px}body[data-stemkids-section=hub] .project-command{min-height:40px}body[data-stemkids-section=hub] .project-command.primary{color:var(--bg);background:var(--accent);border-color:var(--accent)}body[data-stemkids-section=hub] .project-command.primary:hover{color:#fff;background:var(--accent-strong)}body[data-stemkids-section=hub] .catalog-actions input{min-height:40px;border:1px solid var(--line);border-radius:var(--radius-sm);padding:6px 10px;color:var(--ink);background:var(--bg)}body[data-stemkids-section=hub] .catalog-browser{grid-template-columns:216px minmax(0,1fr);gap:28px;border-top:1px solid var(--line);padding-top:20px}body[data-stemkids-section=hub] .catalog-browser .filters{position:static;display:flex;flex-direction:column;gap:18px;margin:0;padding:0 0 2px;border:0}body[data-stemkids-section=hub] .catalog-browser .filters label{font-size:var(--text-sm)}body[data-stemkids-section=hub] .catalog-browser select{height:40px}body[data-stemkids-section=hub] .catalog-browser .result-heading{padding:8px 0 14px;gap:10px;font-size:var(--text-sm)}body[data-stemkids-section=hub] .project-grid{gap:18px}body[data-stemkids-section=hub] .project-card{border-radius:var(--radius-md)}body[data-stemkids-section=hub] .project-card:hover{box-shadow:0 2px 7px #16252912}body[data-stemkids-section=hub] .project-media{aspect-ratio:16/9}body[data-stemkids-section=hub] .project-media-empty{aspect-ratio:auto;min-height:58px;display:flex;align-items:center;gap:10px;padding:14px 16px;background:var(--panel);color:var(--muted);font-size:var(--text-sm)}body[data-stemkids-section=hub] .project-copy{padding:18px}body[data-stemkids-section=hub] .project-copy h2{font-size:var(--text-lg);line-height:1.4;margin:10px 0}body[data-stemkids-section=hub] .project-copy>p{font-size:var(--text-sm);line-height:1.6;-webkit-line-clamp:4}body[data-stemkids-section=hub] .project-copy>.porting-note{font-size:var(--text-xs);margin:8px 0 16px}body[data-stemkids-section=hub] .project-tags{font-size:var(--text-xs);gap:5px 12px}body[data-stemkids-section=hub] .project-meta{font-size:var(--text-xs);gap:5px 14px;margin-top:auto}body[data-stemkids-section=hub] .library-item{padding:22px;border-radius:var(--radius-md)}body[data-stemkids-section=hub] .library-item p{font-size:var(--text-md);margin:12px 0 22px}body[data-stemkids-section=hub] .library-item small{font-size:var(--text-sm)}body[data-stemkids-section=hub] .board-item{padding:22px}body[data-stemkids-section=hub] .board-item p{font-size:var(--text-md)}body[data-stemkids-section=hub] .board-environments{padding-top:14px;border-top:1px solid var(--line)}body[data-stemkids-section=hub] .book-list{gap:0 28px}body[data-stemkids-section=hub] .book-item{border:0;border-bottom:1px solid var(--line);border-radius:0;padding:24px 0;gap:24px}body[data-stemkids-section=hub] .book-item:hover{background:var(--panel)}body[data-stemkids-section=hub] .book-item img{width:116px;height:164px}body[data-stemkids-section=hub] .book-item h2{font-size:var(--text-lg);line-height:1.35;margin:8px 0}body[data-stemkids-section=hub] .book-item p{font-size:var(--text-sm)}body[data-stemkids-section=hub] .book-item small{font-size:var(--text-xs)}body[data-stemkids-section=hub] .github-references:not(:has(.repository-row)){display:flex;align-items:center;flex-wrap:wrap;gap:10px 24px;padding:12px 0;margin-bottom:0;border-top:1px solid var(--line)}body[data-stemkids-section=hub] .github-references:not(:has(.repository-row)) h2{font-size:var(--text-sm);margin:0}body[data-stemkids-section=hub] .github-references .shortcut-links{margin:0;font-size:var(--text-sm)}body[data-stemkids-section=hub] .github-references>.muted{margin-left:auto}body[data-stemkids-section=hub] .board-specifications{max-width:none;font-size:var(--text-md)}body[data-stemkids-section=hub] .board-specifications>div{padding:11px 0}body[data-stemkids-section=hub] .board-profile-section h2{font-size:var(--text-lg)}body[data-stemkids-section=hub] .board-media:not(.board-media-compact) figure{max-width:680px}body[data-stemkids-section=hub] .workflow-tabs[role=tablist]{position:sticky;top:var(--stemkids-height);z-index:4;background:var(--bg);gap:0;margin:18px 0 22px}body[data-stemkids-section=hub] .workflow-tabs button{display:inline-flex;align-items:center;justify-content:center;gap:7px;font-size:var(--text-sm);padding:12px;min-width:0}body[data-stemkids-section=hub] .workflow-tabs button[aria-selected=true]{color:var(--accent);border-color:var(--accent);background:var(--panel)}body[data-stemkids-section=hub] .workflow-summary{background:var(--panel);padding:18px;gap:18px;border:0;border-left:3px solid var(--accent);margin-bottom:18px}body[data-stemkids-section=hub] .workflow-summary small{font-size:var(--text-sm)}body[data-stemkids-section=hub] .user-project-meta{font-size:var(--text-sm);gap:8px 20px}body[data-stemkids-section=hub] .publication-status{background:var(--panel);padding:10px 14px;border:0;font-size:var(--text-sm)}body[data-stemkids-section=hub] .workflow-panel>.user-project-section:first-child{border-top:0;padding-top:0}body[data-stemkids-section=hub] .workflow-row{padding:20px 0}body[data-stemkids-section=hub] .workflow-row-meta{font-size:var(--text-sm)}body[data-stemkids-section=hub] .workflow-filters{background:var(--panel);padding:14px;gap:14px}body[data-stemkids-section=hub] .workflow-filters input,body[data-stemkids-section=hub] .workflow-filters select{background:var(--bg)}body[data-stemkids-section=hub] .workflow-dialog{color:var(--ink)}body[data-stemkids-section=hub] .workflow-dialog form>header{position:sticky;top:-22px;z-index:3;background:var(--bg);padding:14px 0;border-bottom:1px solid var(--line);margin:-8px 0 18px}body[data-stemkids-section=hub] .workflow-dialog form>.author-actions{position:sticky;bottom:-22px;z-index:2;background:var(--bg);padding:14px 0;margin:16px 0 -8px;border-top:1px solid var(--line)}body[data-stemkids-section=hub] .author-form legend{font-size:var(--text-md)}body[data-stemkids-section=hub] .author-form fieldset{padding-block:20px}body[data-stemkids-section=hub] .wiki-formatting{padding:5px;border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-sm)}body[data-stemkids-section=hub] .wiki-formatting .icon{border-color:transparent;background:transparent}body[data-stemkids-section=hub] .wiki-formatting .icon:hover{border-color:var(--accent);background:var(--bg)}@media(min-width:821px)and (max-width:1000px){body[data-stemkids-section=hub] .book-list{grid-template-columns:repeat(2,minmax(0,1fr))}body[data-stemkids-section=hub] .book-item{gap:16px}body[data-stemkids-section=hub] .book-item img{width:86px;height:122px}}@media(max-width:1000px){body[data-stemkids-section=hub] .catalog-browser{grid-template-columns:190px minmax(0,1fr);gap:20px}}@media(max-width:820px){.stemkids-global{padding-inline:16px}.stemkids-global .stemkids-topics{gap:0 8px}body[data-stemkids-section=hub] main{padding:16px 20px 40px}body[data-stemkids-section=hub] .hub-toolbar{padding:10px 20px}body[data-stemkids-section=hub] .catalog-browser{display:block;padding-top:16px}}@media(max-width:820px){body[data-stemkids-section=hub] .catalog-browser .filters{display:none;padding:16px 0;gap:14px;border-bottom:1px solid var(--line);margin-top:4px}body[data-stemkids-section=hub] .catalog-browser .filters-open .filters{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:820px){body[data-stemkids-section=hub] .catalog-browser .filters label{grid-column:auto}}@media(max-width:820px){body[data-stemkids-section=hub] .workflow-tabs[role=tablist]{position:static}body[data-stemkids-section=hub] .page-title{flex-basis:100%}}@media(max-width:520px){.stemkids-global .stemkids-primary{gap:12px;justify-content:space-between}.stemkids-global .stemkids-primary a{font-size:var(--text-xs)}body[data-stemkids-section=hub] main{padding:14px 16px 32px}body[data-stemkids-section=hub] .hub-toolbar{padding:8px 16px}body[data-stemkids-section=hub] .hub-toolbar input{font-size:var(--text-sm)}body[data-stemkids-section=hub] .page-heading h1{font-size:var(--text-xl)}body[data-stemkids-section=hub] .page-heading{margin-bottom:18px}body[data-stemkids-section=hub] .page-heading .catalog-actions{gap:6px}body[data-stemkids-section=hub] .project-command{padding:8px 10px;font-size:var(--text-sm)}}@media(max-width:520px){body[data-stemkids-section=hub] .project-grid{gap:20px}body[data-stemkids-section=hub] .book-item{gap:16px;padding-block:20px}body[data-stemkids-section=hub] .book-item img{width:76px;height:108px}body[data-stemkids-section=hub] .book-item h2{font-size:var(--text-lg)}body[data-stemkids-section=hub] .github-references:not(:has(.repository-row)){gap:8px 16px}body[data-stemkids-section=hub] .github-references>.muted{margin-left:0}}@media(max-width:520px){body[data-stemkids-section=hub] .workflow-tabs button{flex:1 1 40%;font-size:var(--text-sm);padding:10px 6px;justify-content:flex-start}body[data-stemkids-section=hub] .workflow-summary{padding:14px;gap:18px 12px}body[data-stemkids-section=hub] .workflow-summary strong{font-size:var(--text-md)}body[data-stemkids-section=hub] .workflow-dialog form>header{top:-14px}body[data-stemkids-section=hub] .workflow-dialog form>.author-actions{position:static;margin-bottom:0}}@media(max-width:520px){.stemkids-global{padding-inline:12px}.stemkids-global .stemkids-primary{gap:4px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto!important}}@media print{body[data-stemkids-section=hub] .catalog-browser{display:block}body[data-stemkids-section=hub] .workflow-tabs[role=tablist]{position:static}}.skip{position:fixed;left:16px;top:-100px;z-index:1000;padding:12px;background:var(--bg);border:2px solid var(--accent)}.skip:focus{top:12px}.stemkids-global{column-gap:24px}.stemkids-primary{overflow-x:auto;scrollbar-width:thin}.stemkids-actions{gap:12px}.stemkids-actions a{white-space:nowrap}.stemkids-help{color:var(--accent);font-size:var(--text-sm)}.stemkids-account-trigger{font-size:var(--text-sm);text-decoration:none}.stemkids-account-trigger span{max-width:120px;overflow:hidden;text-overflow:ellipsis}.stemkids-home-video h2{margin:0 0 14px}.stemkids-home-video iframe{display:block;width:100%;aspect-ratio:16/9;border:0}.legal-footer{color:var(--muted)}.legal-footer strong{color:var(--ink)}html[data-theme=dark] .legal-footer a{color:var(--accent)}@media(min-width:821px)and (max-width:1360px){.stemkids-global{column-gap:18px}.stemkids-global .stemkids-primary{gap:16px}.stemkids-actions .stemkids-github{display:none}}@media(max-width:1000px){.stemkids-actions .stemkids-help,.stemkids-actions .stemkids-find{display:none}}@media(max-width:820px){.stemkids-global{column-gap:0}.stemkids-actions{gap:6px}.stemkids-global .stemkids-primary{scrollbar-width:none}.stemkids-account-trigger{font-size:var(--text-xs);height:30px;padding:4px 7px;gap:4px}.stemkids-account-trigger ui-icon{display:none}}@media(max-width:820px){body[data-stemkids-section=hub] .catalog-browser .filters{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}}@media(max-width:520px){.stemkids-global .stemkids-brand{gap:7px}.stemkids-brand strong{font-size:var(--text-lg)}.stemkids-actions{gap:5px}}.process-page #breadcrumb{margin-bottom:14px}html[data-theme=dark] .lesson-page .lesson-content{padding:24px 32px;border-radius:var(--radius-md);background:var(--bg);color:var(--ink)}@media(max-width:520px){html[data-theme=dark] .lesson-page .lesson-content{padding:16px}}.stemkids-global .stemkids-primary{overflow:visible}.stemkids-nav-scroll{display:flex;align-items:center;gap:inherit;overflow-x:auto;scrollbar-width:thin;min-width:0;flex:1}.stemkids-primary .stemkids-users-link{flex:none}.stemkids-menu-toggle,.stemkids-global .stemkids-menu-extra{display:none}.stemkids-team-link{color:var(--muted)}.stemkids-actions :is(.stemkids-help,.stemkids-github,.stemkids-find){display:inline-flex;align-items:center;min-height:32px}.legal-footer nav{display:flex;flex-wrap:wrap;gap:4px 16px}@media(max-width:1000px){:root{--stemkids-height:56px}.stemkids-global{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;height:var(--stemkids-height);padding:0 16px;gap:0;overflow:hidden}.stemkids-global .stemkids-brand{height:56px}.stemkids-global .stemkids-primary,.stemkids-global .stemkids-topics{display:none}.stemkids-global .stemkids-actions{gap:8px}.stemkids-global .stemkids-actions :is(.stemkids-help,.stemkids-github,.stemkids-find){display:none}.stemkids-menu-toggle{display:inline-flex;align-items:center;gap:6px;min-height:40px;padding:6px 10px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg);color:var(--ink);font:inherit;font-size:var(--text-sm)}.stemkids-global.menu-open{height:auto;max-height:100dvh;overflow-y:auto;align-content:flex-start;padding-bottom:12px;box-shadow:0 12px 24px #0000002e}.stemkids-global.menu-open .stemkids-primary{display:block;order:3;width:100%;height:auto;border-top:1px solid var(--line);padding-top:4px}.stemkids-global.menu-open .stemkids-nav-scroll{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 16px;overflow:visible}.stemkids-global.menu-open .stemkids-primary a{display:flex;align-items:center;min-height:44px;padding:8px 0;font-size:var(--text-md);white-space:normal}.stemkids-global.menu-open .stemkids-topics{display:grid;order:4;width:100%;height:auto;overflow:visible;grid-template-columns:repeat(4,minmax(0,1fr));grid-template-rows:none;gap:0 8px;border-top:1px solid var(--line)}.stemkids-global.menu-open .stemkids-topics a{display:flex;align-items:center;justify-content:center;min-height:40px;font-size:var(--text-sm);padding:0}.stemkids-global.menu-open .stemkids-menu-extra{display:flex;order:5;width:100%;height:auto;overflow:visible;gap:24px;border-top:1px solid var(--line)}.stemkids-global.menu-open .stemkids-menu-extra a{display:flex;align-items:center;min-height:44px;padding:8px 0;font-size:var(--text-sm)}}@media(max-width:520px){.stemkids-menu-toggle span{display:none}}.stemkids-subnav{display:none}@media(max-width:1000px){.stemkids-global.menu-open .stemkids-nav-scroll{grid-template-columns:minmax(96px,auto) minmax(0,1fr);align-items:start}.stemkids-global.menu-open .stemkids-subnav{display:flex;flex-wrap:wrap;gap:0 16px}.stemkids-global.menu-open .stemkids-subnav a{font-size:var(--text-sm);color:var(--muted)}.stemkids-global.menu-open .stemkids-subnav a[aria-current]{color:var(--ink);font-weight:600}}.page-host{display:contents}:root{--stemkids-height:55px}.stemkids-global{grid-template-rows:54px}.stemkids-global .stemkids-nav-scroll{overflow:visible}.section-tabs{display:flex;flex-wrap:wrap;gap:0 24px;margin:0 0 20px;border-bottom:1px solid var(--line);position:sticky;top:var(--stemkids-height);z-index:6;background:var(--bg)}@media(max-width:520px){.section-tabs{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;gap:0 20px}.section-tabs a{flex:none}}.page-host:has(>section-tabs) :is(.catalog-browser .catalog-filters){top:calc(var(--stemkids-height) + 58px);max-height:calc(100dvh - var(--stemkids-height) - 74px)}.page-host:has(>section-tabs) .lesson-page .lesson-jump-links{top:calc(var(--stemkids-height,100px) + 58px)}.page-host:has(>section-tabs) .detail-context{top:calc(var(--stemkids-height) + 78px)}@media(max-width:820px){.page-host:has(>section-tabs) .project-tabs{top:calc(var(--stemkids-height) + 58px)}}.section-tabs a{display:inline-flex;align-items:center;min-height:40px;margin-bottom:-1px;border-bottom:3px solid transparent;color:var(--muted);font-size:var(--text-sm);text-decoration:none}.section-tabs a:hover{color:var(--ink)}.section-tabs a[aria-current]{border-color:var(--rose);color:var(--ink);font-weight:600}@media(max-width:1000px){:root{--stemkids-height:56px}.stemkids-global.menu-open .stemkids-menu-extra{flex-wrap:wrap;gap:0 24px}}.draft-dialog ul{margin:8px 0 16px;padding-left:20px}.draft-dialog .draft-discard{color:var(--rose);border-color:var(--rose)}body[data-stemkids-section=hub] .catalog-browser .filters{align-items:stretch}body[data-stemkids-section=hub] .catalog-browser .filters>.text-button{align-self:flex-start}body[data-stemkids-section] .catalog-browser{display:block;border-top:1px solid var(--line);padding-top:16px}body[data-stemkids-section] .catalog-browser .catalog-filters,.page-host:has(>section-tabs) .catalog-browser .catalog-filters{position:static;max-height:none;overflow:visible;padding:0;border:0;margin:0 0 12px}@media(min-width:821px){body[data-stemkids-section] .catalog-browser .catalog-filters summary{display:none}}body[data-stemkids-section] .catalog-browser .filters{display:flex;flex-direction:row;flex-wrap:wrap;align-items:flex-end;gap:12px 16px}body[data-stemkids-section] .catalog-browser .filters label{flex:1 1 180px;max-width:260px;display:grid;gap:4px;color:var(--muted)}body[data-stemkids-section] .catalog-browser .filters select{width:100%;height:36px}body[data-stemkids-section] .catalog-browser .filters>.text-button{align-self:center;margin-left:auto}body[data-stemkids-section] .catalog-browser .catalog-topics{margin:0 0 12px}body[data-stemkids-section] .catalog-browser .catalog-search{max-width:none;margin-bottom:8px}body[data-stemkids-section] .catalog-browser .catalog-search input{height:38px}body[data-stemkids-section] .catalog-browser .result-heading{padding:8px 0}body[data-stemkids-section] .catalog-browser .result-row{display:grid;grid-template-columns:128px minmax(0,1fr) minmax(140px,220px);grid-template-rows:auto auto;column-gap:16px;row-gap:2px;align-items:center;padding:10px 8px}body[data-stemkids-section] .catalog-browser .result-type{grid-row:1/3;width:auto;flex-direction:row;align-items:center;justify-content:flex-start;gap:6px;padding:0;color:var(--muted)}body[data-stemkids-section] .catalog-browser .result-type ui-icon{width:16px;height:16px;flex:none}body[data-stemkids-section] .catalog-browser .result-type small{font-size:var(--text-sm);text-align:left;color:var(--muted)}body[data-stemkids-section] .catalog-browser .result-copy{display:contents}body[data-stemkids-section] .catalog-browser .result-copy strong{grid-column:2;font-size:var(--text-md);line-height:1.35;font-weight:600}body[data-stemkids-section] .catalog-browser .result-copy>span{grid-column:2;font-size:var(--text-sm);line-height:1.4;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}body[data-stemkids-section] .catalog-browser .result-copy small{grid-column:3;grid-row:1/3;font-size:var(--text-sm);color:var(--ink);overflow:hidden;text-overflow:ellipsis}body[data-stemkids-section] .catalog-browser .result-row>img{display:none}@media(max-width:820px){body[data-stemkids-section] .catalog-browser .filters label{flex:1 1 calc(50% - 8px);max-width:none}body[data-stemkids-section] .catalog-browser .result-row{grid-template-columns:minmax(0,1fr);padding:10px 0}body[data-stemkids-section] .catalog-browser .result-type,body[data-stemkids-section] .catalog-browser .result-copy small{grid-row:auto;grid-column:1}body[data-stemkids-section] .catalog-browser .result-copy strong,body[data-stemkids-section] .catalog-browser .result-copy>span{grid-column:1}body[data-stemkids-section] .catalog-browser .result-type{width:auto}body[data-stemkids-section] .catalog-browser .result-type small{display:inline;font-size:var(--text-xs)}body[data-stemkids-section] .catalog-browser .catalog-filters summary{display:block}}body[data-stemkids-section] .book-list{grid-template-columns:minmax(0,1fr);gap:0;border-top:1px solid var(--line)}body[data-stemkids-section] .book-item{position:relative;padding:16px 8px;gap:20px;align-items:flex-start}body[data-stemkids-section] .book-item img,body[data-stemkids-section] .book-item .book-cover-placeholder{width:72px;height:102px;flex:none}body[data-stemkids-section] .book-item h2{margin:2px 0 4px}body[data-stemkids-section] .book-item h2 a:after{content:"";position:absolute;inset:0}body[data-stemkids-section] .book-item p{margin:0 0 4px;max-width:72ch}body[data-stemkids-section] .book-item .item-count{margin-top:6px}body[data-stemkids-section] .book-item .text-button{position:relative;z-index:1}@media(max-width:520px){body[data-stemkids-section] .book-item{gap:14px;padding-inline:0}body[data-stemkids-section] .book-item img,body[data-stemkids-section] .book-item .book-cover-placeholder{width:56px;height:80px}}#breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:4px 10px}#breadcrumb>[aria-current]{color:var(--muted);min-width:0}@media(max-width:520px){#breadcrumb>a,#breadcrumb>span{display:none}#breadcrumb>a:has(+span+[aria-current]){display:inline-flex}#breadcrumb>a:has(+span+[aria-current]):before{content:"\2039";margin-right:6px}}.board-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-left:1px solid var(--line);border-top:1px solid var(--line)}.board-item{padding:20px 22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-width:0;display:flex;flex-direction:column}.board-item p{font-size:var(--text-sm);color:var(--muted);margin:12px 0 20px}.board-environments{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:auto;font-size:var(--text-sm)}.board-environments a{display:inline-flex;gap:5px;align-items:center}.board-environments svg{width:14px}.library-grid,.environment-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.library-item{display:flex;flex-direction:column;align-items:flex-start;position:relative;padding:24px;border:1px solid var(--line);border-radius:var(--radius-sm);color:var(--ink);min-width:0}.library-item p{font-size:var(--text-sm);color:var(--muted);margin:14px 0 22px}.library-item small{margin-top:auto}.library-item>svg{position:absolute;bottom:24px;right:20px;color:var(--accent)}.library-item:hover{text-decoration:none;border-color:var(--accent)}.library-item h2{font-size:var(--text-lg);overflow-wrap:anywhere}.environment-tabs{display:flex;gap:25px;border-bottom:1px solid var(--line);margin-bottom:22px;overflow:auto}.environment-tabs a{padding:0 0 12px;color:var(--muted);white-space:nowrap}.environment-tabs [aria-current]{border-bottom:3px solid var(--accent);color:var(--ink);font-weight:600}.filters{display:grid;grid-template-columns:repeat(4,minmax(0,1fr)) 36px;gap:15px;align-items:end;padding:20px 0;border-block:1px solid var(--line)}.filters label{display:flex;flex-direction:column;gap:6px;font-size:var(--text-xs);color:var(--muted)}.filters select,.filters input{width:100%;min-width:0;color:var(--ink);background:var(--bg);border:1px solid var(--line);padding:7px 10px;border-radius:var(--radius-sm);font-size:var(--text-sm);height:38px}.filters select:disabled{opacity:1;background:var(--panel)}.filters .local-search{grid-column:1/-1;max-width:640px}.result-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;color:var(--muted);font-size:var(--text-sm);padding:20px 0 10px}.result-row{display:flex;align-items:center;gap:22px;padding:18px 0;border-bottom:1px solid var(--line);color:var(--ink);min-width:0}.result-row:hover{text-decoration:none;background:var(--panel)}.result-row>svg{color:var(--accent)}.result-type{width:80px;flex-shrink:0;color:var(--muted);display:flex;align-items:center;flex-direction:column;gap:6px}.result-type svg{color:var(--rose)}.result-copy{flex:1;min-width:0;display:flex;flex-direction:column;gap:5px}.result-copy strong{font-size:var(--text-md);overflow-wrap:anywhere}.result-copy>span{font-size:var(--text-sm);color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere}.result-copy small{overflow-wrap:anywhere}.result-row img{width:96px;height:64px;object-fit:contain;background:var(--media-bg)}.board-choice-list{display:flex;gap:18px;flex-wrap:wrap;margin:22px 0}.board-choice-list span{display:flex;align-items:center;gap:7px;font-size:var(--text-sm)}@media(max-width:1000px){.library-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:820px){.board-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:820px){.environment-grid{grid-template-columns:1fr}.filters{grid-template-columns:repeat(2,minmax(0,1fr)) 36px}.filters label:nth-child(3){grid-column:1}.filters #reset{grid-column:3;grid-row:1/3;align-self:center}.result-type{width:60px}.result-row{gap:14px}.result-heading{flex-wrap:wrap;gap:5px}}@media(max-width:520px){.board-grid,.library-grid{grid-template-columns:1fr}.board-item{padding:18px}.board-item p{margin:10px 0 15px}}@media(max-width:520px){.result-type{width:24px;align-self:flex-start;margin-top:3px}.result-type small{display:none}.result-row>svg{width:15px}.result-row img{display:none}.result-copy strong{font-size:var(--text-md)}.filters{gap:10px}.filters select,.filters input{font-size:var(--text-sm);padding:6px}.filters .local-search{grid-column:1/-1}}@media(max-width:520px){.environment-tabs{gap:20px;font-size:var(--text-sm)}}@media print{.result-row{break-inside:avoid}}.resource-labels{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:var(--text-sm);color:var(--muted);padding-bottom:20px;border-bottom:1px solid var(--line)}.resource-intro{display:flex;gap:32px;align-items:flex-start;margin:24px 0}.resource-image{width:40%;height:auto;max-height:330px;object-fit:contain;background:var(--media-bg)}.resource-needs{flex:1;min-width:0;font-size:var(--text-sm)}.resource-needs ul{padding-left:20px;margin-bottom:0}.resource-section{border-top:1px solid var(--line);padding:22px 0;max-width:100%;font-size:var(--text-md)}.resource-section p{max-width:95ch}.resource-section h2,.resource-needs h2,.resource-files h2{font-size:var(--text-lg)}.resource-table{overflow:auto}.resource-table table{width:100%;max-width:750px;border-collapse:collapse;margin-top:16px;font-size:var(--text-sm)}.resource-table th,.resource-table td{text-align:left;padding:10px 16px;border-bottom:1px solid var(--line)}.resource-table th{background:var(--panel)}.resource-files{border-top:1px solid var(--line);padding-top:24px;margin-top:4px;min-width:0}.resource-file-toolbar{display:flex;align-items:flex-end;gap:10px;padding:16px 0}.resource-file-toolbar label{display:flex;flex-direction:column;gap:5px;font-size:var(--text-xs);color:var(--muted);flex:1;min-width:0}.resource-file-toolbar select{width:100%;min-width:0;max-width:700px;font-size:var(--text-sm);height:38px;padding:6px 10px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg);color:var(--ink)}.resource-code{max-width:100%;max-height:640px;overflow:auto;margin:0;padding:20px;background:var(--panel);border:1px solid var(--line);font:13px/1.65 Consolas,monospace;tab-size:4}.resource-code.wrap{white-space:pre-wrap;overflow-wrap:anywhere}.resource-file-count{font-size:var(--text-xs);color:var(--muted)}@media(max-width:820px){.resource-intro{display:block}.resource-image{width:100%;max-height:260px;margin-bottom:20px}.resource-file-toolbar{flex-wrap:wrap;justify-content:flex-end}.resource-file-toolbar label{flex-basis:100%}.resource-code{font-size:var(--text-xs);padding:12px;max-height:500px}.resource-section p{font-size:var(--text-sm)}.resource-table td,.resource-table th{padding:8px}.resource-needs{font-size:var(--text-sm)}}.board-context{font-size:var(--text-sm);color:var(--muted);max-width:95ch}.board-topics{padding-bottom:20px;border-bottom:1px solid var(--line)}.board-topics a{min-width:0;overflow-wrap:anywhere}.board-media{display:flex;gap:24px;margin:0 0 24px;padding-bottom:20px;border-bottom:1px solid var(--line)}.board-media figure{margin:0;min-width:0;flex:1;max-width:560px}.board-image-link{display:flex;align-items:center;justify-content:center;width:100%;height:250px;background:var(--media-bg)}.board-image-link img{display:block;max-width:100%;width:100%;height:100%;object-fit:contain;padding:10px}.board-media figcaption{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 16px;min-height:32px;padding-top:8px;font-size:var(--text-xs);color:var(--muted);overflow-wrap:anywhere}.board-model-link{display:inline-flex;gap:6px;align-items:center;white-space:nowrap}.board-model-link svg{width:14px;height:14px}.board-media-compact{gap:12px;margin-bottom:18px;padding:0;border:0}.board-media-compact figure{width:0}.board-media-compact .board-image-link{height:174px}.board-media-compact figcaption{font-size:var(--text-xs);min-height:34px;line-height:1.4}.board-media-compact.board-media-pair figcaption{min-height:34px}.board-media-pending{align-items:center;justify-content:center;gap:10px;min-height:100px;font-size:var(--text-sm);color:var(--muted);overflow-wrap:anywhere}.board-media-compact.board-media-pending{height:208px}.board-media-pending svg{width:24px;height:24px}@media(max-width:520px){.board-media{gap:12px}.board-image-link{height:210px}.board-media-pair .board-image-link{height:165px}.board-media-compact .board-image-link{height:174px}.board-media figcaption{font-size:var(--text-xs)}.board-media-pair figcaption{align-content:start;justify-content:flex-start}}.board-model-name{margin-top:6px;overflow-wrap:anywhere}.catalog-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:12px 0 20px}.catalog-actions label{display:grid;gap:5px}.catalog-actions a{display:inline-flex;gap:6px;align-items:center}.catalog-row{display:flex;gap:12px;align-items:center;border-bottom:1px solid var(--line,var(--line));padding:12px 0;min-width:0;flex-wrap:wrap}.catalog-row>div:first-child,.catalog-row>a:first-child{flex:1;min-width:180px}.catalog-row small{display:block;color:var(--muted,var(--muted));margin-top:4px}.catalog-row strong{overflow-wrap:anywhere}.catalog-row select{max-width:180px}.catalog-row output{font-size:var(--text-sm)}.catalog-source{width:100%;box-sizing:border-box;font:14px/1.7 Consolas,monospace;min-height:380px;resize:vertical}.catalog-editor-tabs{display:flex;gap:8px;border-bottom:1px solid var(--line,var(--line));margin:15px 0}.catalog-editor-tabs button{padding:10px 14px;border:0;background:none;color:inherit;border-bottom:3px solid transparent}.catalog-editor-tabs [aria-selected=true]{border-color:var(--accent)}.catalog-file{padding:16px 0;border-top:1px solid var(--line)}.catalog-file header{display:flex;align-items:center;gap:12px;justify-content:space-between}.catalog-file h3{font-size:var(--text-md);overflow-wrap:anywhere}.catalog-file summary{cursor:pointer;overflow-wrap:anywhere}.catalog-cover{max-width:100%;max-height:440px;object-fit:contain}.catalog-overlay{margin:8px 16px;display:flex;gap:12px;align-items:center}.catalog-overlay a{color:inherit;text-decoration:underline}#catalog-editor{max-width:1050px}#catalog-editor label{min-width:0}#catalog-editor input[type=file]{max-width:100%;width:100%}@media(max-width:520px){.catalog-row{gap:8px}}@media(max-width:520px){.catalog-actions{gap:8px}.catalog-source{font-size:var(--text-sm)}}.catalog-editor-tabs button{cursor:pointer}#catalog-editor .author-actions{position:sticky;bottom:0;z-index:2;background:var(--bg);border-top:1px solid var(--line,var(--line));padding:12px 0}.board-introduction{max-width:850px;font-size:var(--text-lg);line-height:1.6}.board-specifications{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 32px;max-width:1050px}.board-specifications>div{display:grid;grid-template-columns:minmax(110px,1fr) minmax(0,2fr);gap:14px;padding:12px 0;border-bottom:1px solid var(--line,var(--line))}.board-specifications dt{overflow-wrap:anywhere;color:var(--muted,var(--muted))}.board-specifications dd{margin:0;overflow-wrap:anywhere}.board-pinout{margin:18px 0}.board-pinout img{display:block;max-width:100%;width:100%;height:auto;max-height:900px;object-fit:contain;background:#fff}.board-pinout figcaption{margin-top:8px;color:var(--muted,var(--muted));font-size:var(--text-sm)}.board-editor-group{margin:20px 0;min-width:0}.board-editor-row{display:flex;align-items:start;gap:12px;padding:14px 0;border-bottom:1px solid var(--line,var(--line))}.board-editor-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;flex:1;min-width:0}.board-editor-actions{display:flex;gap:4px;flex-wrap:wrap;max-width:114px}.board-editor-actions .icon{flex:0 0 34px;width:34px;height:34px}.board-editor-fields input{width:100%;min-width:0;box-sizing:border-box}.board-editor-fields input[type=file]{font-size:var(--text-xs);margin-top:5px}.catalog-content-mode{display:grid;gap:8px;margin:16px 0;max-width:620px}.catalog-original a{display:inline-flex;align-items:center;gap:8px}.catalog-overlay{flex-wrap:wrap}.board-guide:empty{display:none}@media(max-width:520px){.board-specifications,.board-editor-fields{grid-template-columns:1fr}.board-editor-actions{max-width:34px}.board-specifications>div{grid-template-columns:1fr;gap:4px}.board-introduction{font-size:var(--text-md)}.catalog-content-mode select{width:100%}}.board-editor-preview{grid-column:1/-1;display:block;width:180px;height:125px;max-width:100%;object-fit:contain;background:#fff;border:1px solid var(--line)}.catalog-browser .catalog-filters{position:sticky;top:calc(var(--stemkids-height) + 16px);min-width:0;max-height:calc(100dvh - var(--stemkids-height) - 32px);overflow-y:auto;padding-right:20px;border-right:1px solid var(--line)}.catalog-browser .filters label[hidden]{display:none}.catalog-browser .filter-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:var(--text-sm)}.catalog-browser .filter-heading #reset{width:32px;height:32px;align-self:auto}.catalog-browser .filter-toggle{display:none}.catalog-search{display:grid;gap:6px;font-size:var(--text-sm);color:var(--muted);margin-bottom:14px;max-width:680px}.catalog-search input{width:100%;min-width:0;height:42px;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:var(--radius-sm);padding:8px 12px;font:inherit;font-size:var(--text-md)}.catalog-controls{display:flex;align-items:end;gap:18px;margin-bottom:14px}.catalog-controls .catalog-search{flex:1;min-width:0;margin:0}.catalog-browser #result-count{color:var(--ink);font-weight:600}.selected-filters{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}.selected-filters:empty{display:none}.filter-chip{display:inline-flex;gap:8px;align-items:center;max-width:100%;min-height:34px;padding:5px 8px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--panel);color:var(--muted);font:inherit;font-size:var(--text-xs);text-align:left}.filter-chip span{min-width:0;overflow-wrap:anywhere}.filter-chip strong{color:var(--ink);font-weight:600}.filter-chip svg{width:14px;height:14px}.filter-chip:hover{border-color:var(--accent)}.catalog-browser .result-row{padding:16px 12px;gap:18px;align-items:flex-start}.catalog-browser .result-row:first-child{border-top:1px solid var(--line)}.catalog-browser .result-type{width:78px;gap:7px;padding-top:4px}.catalog-browser .result-type small{font-size:var(--text-xs);text-align:center}.catalog-browser .result-copy{gap:5px}.catalog-browser .result-copy strong{font-size:var(--text-lg);line-height:1.4}.catalog-browser .result-copy>span{font-size:var(--text-sm);line-height:1.55}.catalog-browser .result-copy small{font-size:var(--text-xs)}.catalog-browser .result-row>svg{margin-top:5px}.catalog-browser .result-row img{height:76px;width:108px}.catalog-browser .pagination{padding-top:18px;border-top:1px solid var(--line)}.catalog-browser .empty-state{padding:24px 0;border-top:1px solid var(--line)}@media(max-width:1000px){.catalog-browser .catalog-filters{padding-right:16px}}@media(max-width:820px){.catalog-browser .catalog-filters{position:static;max-height:none;padding:0;border:0;margin-bottom:16px;overflow:visible}.catalog-browser .filter-toggle{display:inline-flex;gap:10px;min-height:42px}}@media(max-width:820px){.catalog-browser .filter-heading{grid-column:1/-1}}@media(max-width:820px){.catalog-browser .catalog-search{max-width:none}.catalog-browser .result-row img{width:80px;height:64px}}@media(max-width:820px){.catalog-controls{flex-wrap:wrap;gap:12px}.catalog-controls .catalog-search{flex-basis:100%}}@media(max-width:520px){.catalog-browser .result-row{padding:16px 0;gap:10px}.catalog-browser .result-type{width:22px}.catalog-browser .result-copy strong{font-size:var(--text-md)}.catalog-browser .result-copy>span{-webkit-line-clamp:3}.filter-chip{min-height:40px}}.library-item>ui-icon{position:absolute;bottom:22px;right:20px;color:var(--accent)}.board-environments ui-icon svg{width:14px;height:14px}.catalog-browser{display:grid}.catalog-filters summary{font-size:var(--text-sm);font-weight:600;cursor:pointer;margin-bottom:18px}.catalog-filters .filters{padding-top:0}#catalog-results{scroll-margin-top:calc(var(--stemkids-height) + 16px)}.result-with-action{display:flex;align-items:center;min-width:0;gap:8px;border-bottom:1px solid var(--line)}.result-with-action .result-row{flex:1;border-bottom:0}.board-specifications{margin:16px 0 28px}.board-specifications>div{display:grid;grid-template-columns:minmax(140px,1fr) 2fr;gap:20px;border-bottom:1px solid var(--line)}.board-specifications dt{color:var(--muted)}.board-specifications dd{margin:0}@media(max-width:820px){.catalog-browser{display:block}.catalog-browser .catalog-filters{position:static;border:0;max-height:none;padding:0 0 18px}.catalog-filters summary{padding:8px 0;margin-bottom:8px}}@media(max-width:820px){.catalog-browser .filters label:nth-child(3){grid-column:auto}}@media(max-width:520px){.board-specifications>div{grid-template-columns:1fr;gap:3px}}.filter-count{color:var(--accent);font-weight:600}.catalog-topics{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 16px}.catalog-topics a{display:inline-flex;align-items:center;min-height:32px;padding:0 12px;border:1px solid var(--line);border-radius:var(--radius-sm);color:var(--ink);font-size:var(--text-sm);text-decoration:none}.catalog-topics a:hover{border-color:var(--accent)}.catalog-topics a[aria-current]{border-color:var(--accent);color:var(--accent);font-weight:600}.result-heading{flex-wrap:wrap;gap:8px 20px}.filter-bar{display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px 16px;margin:0 0 12px}.filter-bar label{display:grid;gap:4px;flex:1 1 200px;max-width:320px;font-size:var(--text-sm);color:var(--muted)}.result-count{font-size:var(--text-sm);font-weight:600;margin:8px 0}@media(max-width:520px){.filter-bar label{max-width:none}}.book-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}.book-item{display:flex;gap:22px;border:1px solid var(--line);border-radius:var(--radius-sm);padding:24px;color:var(--ink);min-width:0}.book-item>div{min-width:0;flex:1}.book-item img{width:112px;height:158px;object-fit:contain;background:#fff}.book-item h2{margin:8px 0}.book-item p{font-size:var(--text-sm);color:var(--muted)}.book-item>.lucide{color:var(--accent)}.book-item:hover{border-color:var(--accent);text-decoration:none}.book-item .item-count{font-size:var(--text-xs);color:var(--accent);margin-top:14px}.context-link{font-size:var(--text-sm);margin:20px 0}@media(max-width:1000px){.book-list{grid-template-columns:1fr}.book-item img{width:112px;height:158px}}@media(max-width:820px){.book-item{padding:20px}}@media(max-width:520px){.book-item{padding:16px;gap:16px}.book-item img{width:72px;height:102px}.book-item h2{font-size:var(--text-lg)}.book-item>svg{display:none}}.wiki-editor-tools{min-width:0}.wiki-formatting{display:flex;flex-wrap:wrap;gap:4px;margin:8px 0}.wiki-formatting .icon{width:40px;height:40px;flex:0 0 40px}.wiki-editor-tools .catalog-editor-tabs{margin-top:0}.wiki-editor-tools [aria-pressed=true]{border-bottom-color:var(--accent,var(--accent));font-weight:700}.wiki-extra-fields{margin:20px 0;border-top:1px solid var(--line,var(--line));padding-top:14px}.wiki-extra-fields>summary{cursor:pointer;font-weight:600;padding:10px 0}.wiki-focused-editor{max-width:1050px}.wiki-focused-editor>fieldset{margin-top:0}.wiki-focused-editor .author-save-bar{margin-top:8px}.wiki-document{white-space:normal;min-width:0}.wiki-document pre{overflow-wrap:anywhere}.wiki-document h1{font-size:var(--text-xl)}.wiki-access{color:var(--muted,var(--muted));font-size:var(--text-sm)}.wiki-heading{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.wiki-heading h2{margin:0}.wiki-search{padding:16px 0;border-top:1px solid var(--line,var(--line));margin:18px 0;min-width:0}.wiki-search h2{font-size:var(--text-lg)}.wiki-search-row{display:block;padding:12px 0;border-bottom:1px solid var(--line,var(--line));overflow-wrap:anywhere}.wiki-search-row strong{display:block}.wiki-search-row p{color:var(--muted,var(--muted));margin:6px 0;font-size:var(--text-sm)}.wiki-focused-editor [data-form-message],.wiki-focused-editor .autosave-status{margin:8px 0}.wiki-document code{overflow-wrap:anywhere}@media(max-width:520px){.wiki-heading{align-items:flex-start}.wiki-formatting .icon{width:44px;height:44px;flex-basis:44px}.wiki-focused-editor .author-save-bar{position:static;flex-wrap:wrap}.wiki-document h1{font-size:var(--text-xl)}}.wiki-video{margin:18px 0;max-width:100%}.wiki-video video{display:block;width:100%;max-width:850px;max-height:540px;background:#16191c}.wiki-video figcaption{font-size:var(--text-sm);color:var(--muted,var(--muted));margin-top:8px}.wiki-media-dialog input{max-width:100%}.wiki-media-dialog header .icon{font-size:var(--text-xl)}.wiki-upload-status{font-size:var(--text-sm)}.wiki-focused-editor .wiki-document{white-space:normal}.wiki-youtube{width:100%;max-width:850px}.wiki-youtube-frame{width:100%;aspect-ratio:16/9;min-height:200px;background:var(--panel,var(--panel));display:grid}.wiki-youtube-frame iframe{display:block;width:100%;height:100%;min-height:200px;border:0}.wiki-youtube-load{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;width:100%;height:100%;min-height:200px;padding:20px;border:1px solid var(--line,var(--line));border-radius:var(--radius-sm);background:transparent;color:var(--ink);font:inherit;font-size:var(--text-md);cursor:pointer}.wiki-youtube-load:hover{border-color:var(--accent,var(--accent))}.wiki-youtube-load:focus-visible{outline:3px solid var(--accent,var(--accent));outline-offset:-4px}.wiki-youtube figcaption{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px 16px;overflow-wrap:anywhere}.wiki-youtube figcaption span{min-width:0}.wiki-youtube figcaption a{font-size:var(--text-sm)}.wiki-youtube>small{display:block;margin-top:8px;color:var(--muted,var(--muted));font-size:var(--text-xs)}.wiki-media-dialog label{margin-top:14px}.wiki-media-dialog [data-youtube-preview]{min-width:0}.book-cover-placeholder{width:112px;height:158px;flex:0 0 112px;display:grid;place-items:center;background:var(--panel);color:var(--muted)}.book-cover-placeholder svg{width:36px;height:36px}@media(max-width:520px){.book-cover-placeholder{width:70px;height:100px;flex-basis:70px}}.detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:40px}.detail-main{min-width:0}.detail-cover{display:block;width:auto;max-width:100%;max-height:340px;object-fit:contain;margin:0 0 24px;background:var(--media-bg)}.detail-context{border-left:1px solid var(--line);padding-left:22px;align-self:start;position:sticky;top:calc(var(--stemkids-height) + 20px)}.detail-context h2{font-size:var(--text-md);margin:0 0 12px}.detail-context a{display:flex;justify-content:space-between;gap:10px;padding:10px 0;font-size:var(--text-sm)}@media(max-width:1000px){.detail-layout{grid-template-columns:minmax(0,1fr) 200px;gap:24px}}@media(max-width:820px){.detail-layout{display:block}.detail-context{position:static;border-left:0;border-top:1px solid var(--line);padding:22px 0 0;margin-top:28px}}@media(max-width:520px){.detail-cover{max-height:250px}}.chapter-pager{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;margin:16px 0;padding:12px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.chapter-pager a{display:flex;align-items:center;gap:8px;min-height:44px;color:var(--accent);min-width:0}.chapter-pager a span{display:grid;min-width:0}.chapter-pager a span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chapter-pager small{color:var(--muted);font-size:var(--text-xs)}.chapter-pager .chapter-next,.chapter-pager .pager-next{justify-content:flex-end;text-align:right}.chapter-pager .chapter-toc{font-size:var(--text-sm);color:var(--muted)}.chapter-pager ui-icon{flex:none}@media(max-width:520px){.chapter-pager{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.chapter-pager .chapter-toc{grid-column:1/-1;grid-row:2;justify-content:center;min-height:32px}.chapter-pager a span{white-space:normal;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical}.chapter-pager small{display:block}}.book-toc{list-style:none;margin:0 0 4px;padding:0}.detail-context .book-toc a{display:block;padding:7px 0 7px 10px;border-left:2px solid transparent;margin-left:-12px;color:var(--ink)}.detail-context .book-toc a[aria-current]{border-left-color:var(--accent);font-weight:600;color:var(--ink)}.detail-context .book-toc a:hover{color:var(--accent)}.detail-main .lesson-code{box-sizing:border-box;width:100%;border:1px solid var(--line);border-radius:var(--radius-md);font:14px/1.7 Consolas,Courier New,monospace;tab-size:4;max-height:70vh}.detail-main .lesson-code code{font:inherit;white-space:inherit;background:none;padding:0;color:inherit}lesson-view,lessons-view{display:block}.lesson-editor label{display:grid;gap:6px;margin:14px 0}.lesson-editor textarea,.lesson-editor input,.lesson-editor select{box-sizing:border-box;width:100%;font:inherit;padding:10px}.lesson-editor textarea,.lesson-code{font:14px/1.5 Consolas,monospace}.lesson-content{overflow-x:auto}.lesson-content img,.lesson-content svg{max-width:100%;height:auto}.lesson-content table{width:100%}.lesson-code{white-space:pre;overflow:auto;max-height:70vh;padding:16px;background:var(--panel)}.lesson-section{margin:24px 0}.lesson-content [role=tabpanel]{display:block}.lesson-content button,.lesson-content select{min-height:44px}.lesson-rich-editor{max-height:55vh;overflow:auto;border:1px solid var(--line-strong);padding:16px;min-height:160px}.lesson-rich-editor img,.lesson-rich-editor svg{max-width:100%}.lesson-image-dialog{border:1px solid var(--line);max-width:94vw}.lesson-image-dialog img{display:block;max-width:85vw;max-height:80vh;object-fit:contain}.lesson-image-dialog::backdrop{background:#1238}.lesson-page{max-width:1180px;margin:0 auto;min-width:0;color:var(--ink);font:var(--text-md)/1.6 var(--font)}.lesson-toolbar{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px;margin:12px 0 0;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-md)}.lesson-toolbar label,.lesson-code-controls label{display:grid;gap:6px;font-size:var(--text-sm);font-weight:600}.lesson-toolbar select,.lesson-code-controls select{font:inherit;background:var(--bg);color:var(--ink);border:1px solid var(--line-strong);border-radius:var(--radius-sm);padding:9px 12px;min-height:44px;max-width:100%}.lesson-author-actions,.lesson-code-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.lesson-page button,.lesson-list-help button{font:inherit;cursor:pointer;min-height:44px;padding:9px 15px;border:1px solid var(--line-strong);background:var(--bg);color:var(--accent-strong);border-radius:var(--radius-sm)}.lesson-page button:disabled{cursor:default;opacity:.55}.lesson-page .lesson-edit-button{background:var(--accent-strong);color:#fff;border-color:var(--accent-strong);font-weight:600}.lesson-jump-links{display:flex;gap:8px 24px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding:14px 0;margin-bottom:24px;font-size:var(--text-sm)}.lesson-jump-links a{color:var(--accent-strong);text-decoration:none;padding:6px 0}.lesson-jump-links a:hover{text-decoration:underline}.lesson-page :is([id],.lesson-editor){scroll-margin-top:calc(var(--stemkids-height,100px) + 24px)}.lesson-page .lesson-content{overflow:visible;min-width:0}.lesson-page .lesson-content .page-header{padding:0;width:100%;margin:0}.lesson-page .lesson-section{margin:28px 0;min-width:0}.lesson-page .lesson-content #lesson-bom{overflow-x:auto}.lesson-page .lesson-content .bom-component-picture{padding:0;min-height:0;border:1px solid var(--line);background:var(--media-bg)}.lesson-page .lesson-content .bom-component-picture img{display:block;width:112px;height:76px;object-fit:contain;background:var(--media-bg)}.lesson-code-panel{padding:28px 0;border-top:1px solid var(--line);margin:32px 0;min-width:0}.lesson-code-heading{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:18px}.lesson-code-heading h2{font-size:var(--text-lg);margin:0}.lesson-code-heading span{font:13px Consolas,monospace;color:var(--muted);overflow-wrap:anywhere}.lesson-code-controls{display:flex;flex-wrap:wrap;gap:16px;margin:16px 0}.lesson-code-controls label{flex:1;min-width:min(240px,100%)}.lesson-language-tabs{display:flex;flex-wrap:wrap;gap:6px;margin:20px 0 14px}.lesson-language-tabs button[aria-pressed=true]{background:var(--accent-strong);color:#fff;border-color:var(--accent-strong);font-weight:600}.lesson-code-actions{margin:12px 0 18px}.lesson-page .lesson-code{box-sizing:border-box;display:block;width:100%;margin:0 0 22px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--panel);color:var(--ink);font:14px/1.8 Consolas,Courier New,monospace;white-space:pre;overflow:auto;max-height:680px;padding:22px;tab-size:4}.lesson-page .lesson-code code{font:inherit;white-space:inherit;background:none;padding:0;color:inherit}.lesson-token-comment{color:var(--code-comment)}.lesson-token-string{color:var(--code-string)}.lesson-token-number{color:var(--code-number)}.lesson-token-keyword{color:var(--code-keyword);font-weight:600}.lesson-token-register{color:var(--code-register);font-weight:600}.lesson-code-explanation{max-width:95ch;font-size:var(--text-md);line-height:1.7}.lesson-page #lesson-self-check{max-width:900px;border-top:1px solid var(--line);padding:28px 0;margin:28px 0}.lesson-page #lesson-self-check fieldset{border:1px solid transparent;border-left-width:4px;border-radius:var(--radius-md);padding:16px 18px 16px 16px;margin:0 0 10px;min-width:0;transition:background-color .15s,border-color .15s,box-shadow .15s}.lesson-page #lesson-self-check fieldset:is(:hover,:focus-within){background:var(--panel);border-color:var(--line);box-shadow:0 2px 10px #00000014}.lesson-page #lesson-self-check fieldset.is-right{border-left-color:var(--accent)}.lesson-page #lesson-self-check fieldset.is-wrong{border-left-color:var(--rose)}@media(prefers-reduced-motion:reduce){.lesson-page #lesson-self-check fieldset{transition:none}}.lesson-page #lesson-self-check legend{display:contents}.lesson-page #lesson-self-check .self-check-number{display:block;font-size:var(--text-sm);color:var(--muted);margin-bottom:4px}.lesson-page #lesson-self-check .self-check-question{display:block;font-size:var(--text-lg);font-weight:600;line-height:1.4;color:var(--ink);max-width:72ch;overflow-wrap:anywhere}.lesson-page #lesson-self-check .self-check-options{display:grid;gap:4px;margin-top:12px}.lesson-page #lesson-self-check .checkbox{display:flex;align-items:center;gap:12px;min-height:44px;padding:8px 12px;margin:0;border:1px solid transparent;border-radius:var(--radius-sm);font-size:var(--text-md);font-weight:400;line-height:1.5;color:var(--ink);cursor:pointer}.lesson-page #lesson-self-check .checkbox:hover{background:var(--bg);border-color:var(--line)}.lesson-page #lesson-self-check .is-graded .checkbox{cursor:default}.lesson-page #lesson-self-check .is-graded .checkbox:hover{background:transparent;border-color:transparent}.lesson-page #lesson-self-check .is-graded .checkbox:has(input:checked):hover{background:var(--bg)}.lesson-page #lesson-self-check input[type=radio]{flex:0 0 18px;width:18px;height:18px;margin:0;accent-color:var(--accent-strong)}.lesson-page #lesson-self-check .self-check-option-text{flex:1;min-width:0}.lesson-page #lesson-self-check .checkbox:has(input:checked){background:var(--bg);border-color:var(--line-strong)}.lesson-page #lesson-self-check .is-graded .checkbox.is-correct{border-color:var(--accent)}.lesson-page #lesson-self-check .is-graded .checkbox.is-chosen-wrong{border-color:var(--rose)}.lesson-page #lesson-self-check .self-check-mark{flex:none;font-size:var(--text-sm);font-weight:600;color:var(--accent)}.lesson-page #lesson-self-check .self-check-feedback{margin:12px 0 0;padding-top:10px;border-top:1px solid var(--line);font-size:var(--text-sm);line-height:1.5;max-width:72ch}.lesson-list-help{border-left:3px solid var(--accent);background:var(--panel);padding:16px 20px;margin:16px 0 24px}.lesson-list-help p{margin:6px 0 12px}@media(max-width:520px){.lesson-toolbar{padding:14px}.lesson-author-actions{width:100%}.lesson-edit-button{flex:1}.lesson-jump-links{gap:4px 18px}.lesson-code-controls{display:grid;grid-template-columns:minmax(0,1fr)}.lesson-page .lesson-code{font-size:var(--text-sm);padding:14px;max-height:60vh}.lesson-code-actions button{flex:1 1 140px}.lesson-page .lesson-content .page-header{padding:0}.lesson-editor{padding:14px}.lesson-page #lesson-self-check .checkbox{align-items:flex-start;flex-wrap:wrap}.lesson-page #lesson-self-check input[type=radio]{margin-top:3px}.lesson-page #lesson-self-check .self-check-mark{flex-basis:100%;padding-left:30px}.lesson-page #lesson-self-check fieldset{padding:12px 12px 12px 10px}}.lesson-code-wrap{display:flex;gap:9px;align-items:center;margin:10px 0 14px;font-size:var(--text-sm);color:var(--muted)}.lesson-code-wrap input{width:18px;height:18px;accent-color:var(--accent-strong)}.lesson-page .lesson-code.wrap{white-space:pre-wrap;overflow-wrap:anywhere}.lesson-section-actions{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.lesson-page .lesson-inline-edit{font-size:var(--text-sm);min-height:36px;padding:6px 10px;margin:0 0 12px;background:var(--panel)}.lesson-editor details{border:1px solid var(--line);padding:14px 18px;margin:16px 0;border-radius:var(--radius-sm)}.lesson-editor summary{cursor:pointer;font-weight:600;padding:4px 0}.lesson-editor fieldset{border:1px solid var(--line);padding:16px;margin:16px 0;min-width:0}.lesson-editor .lesson-rich-editor{background:#fff;font-size:var(--text-md);line-height:1.65}.lesson-page #lesson-self-check label:not(.checkbox){display:grid;gap:6px;margin:14px 0}.lesson-page .lesson-section{overflow-x:auto}.lesson-page .lesson-content select{max-width:100%}.lesson-page{font-family:var(--font);line-height:1.6}.lesson-page .lesson-content .page-header{display:block;margin:0;padding:0;max-width:none;width:100%}.lesson-page .lesson-content .page-header h1,.lesson-page .lesson-content>.lesson-section h1{font:650 var(--text-2xl)/1.25 var(--font);margin:8px 0 12px;letter-spacing:0}.lesson-page .lesson-content h2{font:650 var(--text-lg)/1.35 var(--font);margin:0 0 14px}.lesson-page .lesson-content h3{font:600 var(--text-lg)/1.4 var(--font);margin:18px 0 10px}.lesson-page .lesson-content p{line-height:1.65}.lesson-page .lesson-content .page-header .lesson-link{display:inline-block;margin:12px 0 0;white-space:normal}.lesson-page .lesson-jump-links{display:flex;gap:0;border-bottom:1px solid var(--line);padding:0;margin:22px 0 28px}.lesson-page .lesson-jump-links button{background:transparent;border:0;border-radius:0;border-bottom:3px solid transparent;color:var(--muted);min-height:48px;padding:12px 18px;white-space:nowrap}.lesson-page .lesson-jump-links button[aria-selected=true]{border-bottom-color:var(--accent);color:var(--accent-strong);font-weight:650}.lesson-page .lesson-code-heading{display:flex;justify-content:space-between;align-items:baseline;text-align:left;padding:0;margin:0 0 18px;width:100%;border:0;background:none;min-height:0;gap:12px}.lesson-page .lesson-code-heading h2{margin:0;font:650 var(--text-lg)/1.35 var(--font)}.lesson-page .lesson-code-controls{display:block;max-width:520px;margin:14px 0}.lesson-page .lesson-code-controls select{width:100%;min-width:0}.lesson-page .lesson-language-tabs{margin:16px 0 12px}.lesson-page label.lesson-code-wrap.lesson-code-wrap{display:flex;flex-direction:row;align-items:center;gap:9px;font:var(--text-sm)/1.5 var(--font)}.lesson-page label.lesson-code-wrap.lesson-code-wrap input[type=checkbox]{width:18px;height:18px;margin:0;flex:0 0 18px}.lesson-page .lesson-code{font-size:var(--text-md);line-height:1.7}.lesson-page .assembly-code,.lesson-page .assembly-code code{white-space:normal}.lesson-page .lesson-asm-line{display:grid;grid-template-columns:minmax(300px,32%) minmax(0,1fr);gap:12px;line-height:1.7;padding:4px 0;border-bottom:1px solid var(--line)}.lesson-asm-instruction{white-space:pre-wrap;overflow-wrap:anywhere;font-weight:650}.lesson-asm-comment{white-space:pre-wrap;overflow-wrap:anywhere;color:var(--code-comment);font-weight:400}.lesson-asm-instruction .lesson-token-comment{font-weight:400}.lesson-page .lesson-asm-function{margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}.lesson-page .lesson-asm-line:first-child{margin-top:0;border-top:0;padding-top:0}.lesson-page .lesson-asm-blank{height:8px;min-height:0;padding:0;border:0}.lesson-page .lesson-section:has(>div>section[hidden]){margin:0}.lesson-page .lesson-section:has(>div:empty){display:none}.lesson-page .lesson-content select{font-size:var(--text-sm);padding:9px 12px;border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:var(--bg);color:var(--ink);min-height:44px}@media(max-width:520px){.lesson-page .lesson-content .page-header h1,.lesson-page .lesson-content>.lesson-section h1{font-size:var(--text-xl)}.lesson-page .lesson-jump-links{display:grid;grid-template-columns:1fr 1fr;gap:0;margin:18px 0 24px}.lesson-page .lesson-jump-links button{font-size:var(--text-sm);padding:10px 8px;text-align:left}.lesson-page .lesson-code{font-size:var(--text-sm);padding:14px}.lesson-page .lesson-code-actions{gap:8px}.lesson-page .lesson-language-tabs{gap:5px}.lesson-page .lesson-language-tabs button{padding:9px 11px;font-size:var(--text-sm)}.lesson-page .lesson-code-heading{gap:6px;margin:0 0 14px}.lesson-page .lesson-code-heading h2{font-size:var(--text-lg)}.lesson-page .lesson-asm-line{grid-template-columns:minmax(0,1fr);gap:3px}.lesson-page .lesson-asm-comment{padding-left:14px}.lesson-page .lesson-content #lesson-bom{overflow:visible}}@media(max-width:520px){.lesson-page .lesson-content #lesson-bom thead,.lesson-page .lesson-content #lesson-bom tr:has(>th){display:none}.lesson-page .lesson-content #lesson-bom tbody tr{display:block;border:1px solid var(--line);padding:14px;margin:0 0 14px;border-radius:var(--radius-sm);background:var(--bg)}.lesson-page .lesson-content #lesson-bom td{display:grid;grid-template-columns:96px minmax(0,1fr);gap:4px 10px;border:0;padding:8px 0;font-size:var(--text-sm);line-height:1.5;width:auto;overflow-wrap:anywhere}.lesson-page .lesson-content #lesson-bom td:before{content:attr(data-label);color:var(--muted);font-weight:600;grid-column:1}.lesson-page .lesson-content #lesson-bom td>*{grid-column:2;min-width:0}.lesson-page .lesson-content #lesson-bom td img{max-width:100%;object-fit:contain}}.lesson-page .lesson-code-extras:empty{display:none}.lesson-page .lesson-code-extras .backup-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.lesson-page .lesson-code-extras .backup-columns.single-code{grid-template-columns:minmax(0,1fr)}.lesson-page .lesson-code-extras .backup-columns>section{min-width:0}.lesson-page .lesson-code-extras .backup-columns:not(.single-code) .lesson-asm-line{grid-template-columns:minmax(0,1fr)}.lesson-page .lesson-code-extras .code-view-switch button[aria-pressed=true]{background:var(--accent-strong);color:#fff}@media(max-width:1000px){.lesson-page .lesson-code-extras .backup-columns{grid-template-columns:minmax(0,1fr)}}.lesson-page .lesson-code code{font-weight:600}.lesson-page .lesson-code code .lesson-token-comment,.lesson-page .lesson-code code .lesson-asm-comment{font-weight:400}@media(max-width:520px){.lesson-page .lesson-content #lesson-bom .bom-component,.lesson-page .lesson-content #lesson-bom .bom-visual{display:flex;flex-direction:column;align-items:flex-start;gap:6px;max-width:100%;min-width:0}.lesson-page .lesson-content #lesson-bom .bom-visual small{display:block;white-space:normal;position:static;max-width:100%;margin:0}}.lesson-page{--lesson-tabs-height:52px}.lesson-page .lesson-jump-links{position:sticky;top:var(--stemkids-height,100px);z-index:20;background:#fff;margin:20px 0 24px}.lesson-page :is([id],.lesson-editor){scroll-margin-top:calc(var(--stemkids-height,100px) + var(--lesson-tabs-height) + 24px)}@media(max-width:520px){.lesson-page{--lesson-tabs-height:100px}}lessons-view .lesson-page .lesson-content .lesson-jump-links button[aria-selected=true]{background:var(--panel);color:var(--accent-strong);border-bottom-color:var(--accent)}lessons-view .lesson-page .lesson-content .lesson-section .page-header{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;width:100%;max-width:none;margin:0;padding:0;background:none;border:0}lessons-view .lesson-page .lesson-content .lesson-section .page-header h1{font:650 var(--text-2xl)/1.25 var(--font);margin:8px 0 12px;letter-spacing:0}@media(max-width:520px){lessons-view .lesson-page .lesson-content .lesson-section .page-header{display:block}lessons-view .lesson-page .lesson-content .lesson-section .page-header h1{font-size:var(--text-xl)}}lessons-view .lesson-page .lesson-content .lesson-section .page-header>div{flex:1;min-width:0}lessons-view .lesson-page .lesson-content .lesson-section .page-header .lesson-link{flex:0 0 auto;width:auto;max-width:100%}.lessons-view [data-netlist-runtime-only],lessons-view [data-netlist-runtime-only]{display:none!important}.lesson-page .lesson-netlist-wiring{padding:0;max-width:100%}.lesson-page .netlist-table{overflow-x:auto;max-width:100%;margin:16px 0 24px}.lesson-page .netlist-table table{width:100%;border-collapse:collapse}.lesson-page .netlist-table th{background:var(--panel)}.lesson-page .lesson-netlist-wiring h3{margin:24px 0 12px}.lesson-page .lesson-netlist-wiring code{white-space:nowrap}.lesson-page .lesson-netlist-wiring li{margin:9px 0}.lesson-discussion{margin-top:40px;border-top:1px solid var(--line);padding-top:24px}.lesson-discussion>h2{margin:0 0 8px}.lesson-login-link{font-size:var(--text-sm)}.lesson-page .ibom{margin:16px 0 24px}.lesson-page .ibom-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin:0 0 10px}.lesson-page .ibom-tabs{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}.lesson-page .ibom-tabs button{border:0;border-radius:0;background:var(--panel);color:var(--ink);padding:6px 14px;font:inherit;font-size:var(--text-sm);cursor:pointer;min-height:36px}.lesson-page .ibom-tabs button[aria-pressed=true]{background:var(--accent,#087b70);color:#fff}.lesson-page .ibom-progress{display:inline-flex;align-items:center;gap:8px;font-size:var(--text-sm);margin-left:auto}.lesson-page .ibom-meter{display:inline-block;width:110px;height:8px;border-radius:4px;background:var(--line);overflow:hidden}.lesson-page .ibom-meter i{display:block;height:100%;width:0;background:#44a344}.lesson-page .ibom-bar [data-ibom-reset]{min-height:36px;padding:4px 12px;font-size:var(--text-sm)}.lesson-page .ibom-grid{display:grid;grid-template-columns:minmax(380px,40%) minmax(0,1fr);gap:12px;align-items:start}.lesson-page .ibom-side{border:1px solid var(--line);border-radius:8px;max-height:620px;overflow:auto;background:var(--panel)}.lesson-page .ibom .ibom-side table{width:100%;min-width:0!important;table-layout:auto!important;border-collapse:collapse;margin:0}.lesson-page .ibom .ibom-grid>*{min-width:0}.lesson-page .ibom .ibom-side th,.lesson-page .ibom .ibom-side td{padding:6px 8px!important;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle;font-size:var(--text-sm)}.lesson-page .ibom-side th{white-space:nowrap;position:sticky;top:0;background:var(--panel);font-weight:600;z-index:1}.lesson-page .ibom-side td.ck{width:30px;text-align:center}.lesson-page .ibom-side td.ck input{width:18px;height:18px;margin:0}.lesson-page .ibom-side td img{width:52px;height:36px;object-fit:contain;background:#fff;border:1px solid var(--line);border-radius:4px;display:block}.lesson-page .ibom-side tr[data-refs],.lesson-page .ibom-side tr[data-ibom-net],.lesson-page .ibom-side li[data-ibom-step]{cursor:pointer}.lesson-page .ibom-side .hl{background:#fdecec}.lesson-page .ibom-side tr.done td:not(.ck){opacity:.5}.lesson-page .ibom-side ol{margin:0;padding:8px 10px 8px 32px}.lesson-page .ibom-side li{padding:4px;margin:0;border-radius:6px;font-size:var(--text-sm)}.lesson-page .ibom-side li.done{opacity:.5;text-decoration:line-through}.lesson-page .ibom-side .ibom-hint{margin:0;padding:8px 10px;font-size:12px;opacity:.75}.lesson-page .ibom-off{display:none}.lesson-page .ibom .lesson-breadboard{margin:0}.lesson-page .ibom svg .bb-part,.lesson-page .ibom svg .bb-wire,.lesson-page .ibom svg .bb-label{transition:opacity .15s;cursor:pointer}.lesson-page .ibom svg.focus .bb-part:not(.hl),.lesson-page .ibom svg.focus .bb-wire:not(.hl),.lesson-page .ibom svg.focus .bb-label:not(.hl){opacity:.18}.lesson-page .ibom svg .bb-part.done:not(.hl){opacity:.35}.lesson-page .ibom svg .bb-glow circle,.lesson-page .ibom svg .bb-glow rect{fill:none;stroke:#d04040;stroke-width:3.5;pointer-events:none}.lesson-page .ibom svg .bb-glow circle.pin{stroke:#ffb629}.lesson-page .ibom svg .bb-pin{cursor:pointer}.lesson-page .ibom-bar [data-ibom-3d]{min-height:36px;padding:4px 14px;font-size:var(--text-sm);font-weight:600}.lesson-page .ibom-bar [data-ibom-3d][aria-pressed=true]{background:var(--accent,#087b70);color:#fff;border-color:var(--accent,#087b70)}.lesson-page .ibom [data-bb3d-view]{position:relative;min-height:300px;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#eef1f3;padding:0;font-size:var(--text-sm)}.lesson-page .ibom [data-bb3d-view]:not(.ibom-off){display:block}.lesson-page .ibom [data-bb3d-view] canvas{display:block;width:100%;touch-action:none;outline:0}.lesson-page .ibom .bb3d-bar{position:absolute;top:8px;left:8px;display:flex;gap:6px;flex-wrap:wrap}.lesson-page .ibom .bb3d-bar button{min-height:30px;padding:2px 10px;font:inherit;font-size:12px;border:1px solid var(--line);border-radius:6px;background:#ffffffeb;color:var(--ink);cursor:pointer}.lesson-page .ibom .bb3d-bar button[aria-pressed=true]{background:var(--accent,#087b70);color:#fff;border-color:var(--accent,#087b70)}.lesson-page .ibom .bb3d-tag{align-self:center;font-size:12px;font-weight:600;color:#7a4b00;background:#fff3d6;border:1px solid #f0c060;border-radius:6px;padding:4px 8px}.lesson-page .ibom .bb3d-tools{position:absolute;left:8px;right:8px;bottom:8px;display:flex;gap:6px;flex-wrap:wrap;align-items:center;padding:6px 8px;border:1px solid var(--line);border-radius:8px;background:#fffffff0;font-size:12px}.lesson-page .ibom .bb3d-tools button,.lesson-page .ibom .bb3d-tools select{min-height:30px;padding:2px 10px;font:inherit;font-size:12px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink);cursor:pointer;max-width:200px}.lesson-page .ibom .bb3d-tools button[aria-pressed=true]{background:var(--accent,#087b70);color:#fff;border-color:var(--accent,#087b70)}.lesson-page .ibom .bb3d-tools .bb3d-msg{flex:1 1 160px;min-width:0;color:#263238}.lesson-page .ibom .bb3d-tools .bb3d-msg.warn{color:#b3261e;font-weight:600}.lesson-page .ibom [data-bb3d-view]:focus-visible{outline:2px solid var(--accent,#087b70)}.lesson-page .ibom-side .bb3d-warn{color:#b3261e;opacity:1}@media(max-width:700px){.lesson-page .ibom .bb3d-tools{position:static;margin:0;border-radius:0 0 8px 8px;border-width:1px 0 0}}.lesson-page .ibom figcaption .bb3d-tag{display:inline-block;margin-left:8px;vertical-align:middle}.lesson-page .ibom .bb3d-tools .bb3d-admin{border-color:#c98a1b;color:#7a4b00;background:#fff8e8}.lesson-page .ibom .bb3d-tools .bb3d-admin[hidden]{display:none}.lesson-page .ibom .bb3d-tools .bb3d-model{flex-basis:100%;display:flex;gap:6px;flex-wrap:wrap;align-items:center;padding-top:6px;border-top:1px dashed var(--line);font-size:12px}.lesson-page .ibom .bb3d-tools .bb3d-model input[type=number]{width:72px;min-height:28px;font:inherit;font-size:12px;border:1px solid var(--line);border-radius:6px;padding:2px 6px}.lesson-page .ibom .bb3d-tools .bb3d-model .bb3d-file input{font-size:11px;max-width:200px}.lesson-page .ibom .bb3d-tools .bb3d-model select{max-width:260px}.lesson-page .ibom [data-bb3d-view]:fullscreen{border:0;border-radius:0;background:#eef1f3;display:flex;flex-direction:column}.lesson-page .ibom [data-bb3d-view]:fullscreen canvas{flex:1 1 auto;min-height:0}.lesson-page .ibom [data-bb3d-view]:fullscreen .bb3d-tools{position:static;border-radius:0;max-height:40vh;overflow:auto}.lesson-page .ibom .bb3d-tools{inset:0 0 0 auto;width:204px;flex-direction:column;flex-wrap:nowrap;align-items:stretch;gap:5px;padding:8px;border-radius:0;border-width:0 0 0 1px;overflow:auto;background:#fffffff7}.lesson-page .ibom .bb3d-tools>button,.lesson-page .ibom .bb3d-tools>select{width:100%;text-align:left}.lesson-page .ibom .bb3d-tools .bb3d-row{display:flex;gap:4px}.lesson-page .ibom .bb3d-tools .bb3d-row button{flex:1 1 0;min-width:0;text-align:center}.lesson-page .ibom .bb3d-tools .bb3d-sep{width:100%;border:0;border-top:1px solid var(--line);margin:2px 0}.lesson-page .ibom .bb3d-tools .bb3d-msg{flex:0 0 auto;white-space:normal;font-size:12px;line-height:1.3}.lesson-page .ibom .bb3d-tools .bb3d-model{flex-direction:column;align-items:stretch;flex-basis:auto}.lesson-page .ibom .bb3d-tools .bb3d-model select{max-width:100%}.lesson-page .ibom .bb3d-tools .bb3d-model input[type=number]{width:100%}@media(max-width:700px){.lesson-page .ibom .bb3d-tools{width:auto;flex-direction:row;flex-wrap:wrap;border-width:1px 0 0;overflow:visible}.lesson-page .ibom .bb3d-tools>button,.lesson-page .ibom .bb3d-tools>select{width:auto}.lesson-page .ibom .bb3d-tools .bb3d-sep{display:none}}.lesson-page .ibom .bb3d-tools .bb3d-menuarea{display:flex;flex-direction:column;gap:5px}.lesson-page .ibom .bb3d-tools .bb3d-head{font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:#546e7a;margin:6px 0 0;padding-bottom:2px;border-bottom:1px solid var(--line)}.lesson-page .ibom .bb3d-tools .bb3d-hint{font-size:11.5px;color:#607d8b;line-height:1.3}.lesson-page .ibom .bb3d-tools .bb3d-menuarea select{width:100%}@media(max-width:700px){.lesson-page .ibom .bb3d-tools .bb3d-menuarea{flex-direction:row;flex-wrap:wrap;align-items:center}.lesson-page .ibom .bb3d-tools .bb3d-head{width:100%;margin:2px 0 0;border:0}.lesson-page .ibom .bb3d-tools .bb3d-hint{width:100%}}.lesson-page .ibom .bb3d-tools .bb3d-check{display:flex;align-items:center;gap:6px;font-size:12px;color:#37474f}.lesson-page .ibom .bb3d-menu{position:absolute;z-index:4;min-width:200px;padding:4px;border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:0 6px 18px #0000002e;display:flex;flex-direction:column}.lesson-page .ibom .bb3d-menu-title{font-size:11px;font-weight:600;color:#546e7a;padding:4px 8px;border-bottom:1px solid var(--line);margin-bottom:2px}.lesson-page .ibom .bb3d-menu button{display:flex;justify-content:space-between;gap:12px;width:100%;text-align:left;border:0;background:none;font:inherit;font-size:13px;padding:6px 8px;border-radius:6px;cursor:pointer}.lesson-page .ibom .bb3d-menu button:hover,.lesson-page .ibom .bb3d-menu button:focus-visible{background:#e6f2f0}.lesson-page .ibom .bb3d-menu button span{color:#90a4ae;font-size:11px}.lesson-page .ibom .bb3d-marquee{position:absolute;border:1.5px dashed var(--accent,#087b70);background:#087b7014;pointer-events:none;z-index:3}@media(max-width:900px){.lesson-page .ibom-grid{grid-template-columns:minmax(0,1fr)}.lesson-page .ibom .lesson-breadboard{order:-1}.lesson-page .ibom-side{max-height:none}.lesson-page .ibom-progress{margin-left:0}}@media(max-width:520px){.lesson-page .ibom .ibom-side th,.lesson-page .ibom .ibom-side td{padding:5px 4px!important}.lesson-page .ibom-side [data-ibom-pane=bom] th:nth-child(4),.lesson-page .ibom-side [data-ibom-pane=bom] td:nth-child(4){display:none}.lesson-page .ibom-side code{white-space:normal;word-break:break-all}}.lesson-page .lesson-content .lg-lead{font-size:var(--text-lg);line-height:1.5;margin:0 0 14px;max-width:72ch}.lesson-page .lesson-content .lg-list{margin:0 0 8px;padding-left:1.4em;display:grid;gap:8px;max-width:72ch}.lesson-page .lesson-content :is(.lg-list,.theory-list)>li{margin:0;padding-left:2px}.lesson-page .lesson-content :is(.lg-list,.theory-list)>li::marker{color:var(--accent)}.lesson-page .lesson-content .lg-list>li>strong:first-child{color:var(--accent-strong)}.lesson-page .lesson-content h3:has(+.theory){margin:28px 0 12px;padding-top:16px;border-top:1px solid var(--line);color:var(--accent-strong);font-size:var(--text-lg)}.lesson-page .lesson-content .theory>p{margin:0 0 12px}.lesson-page .lesson-content .theory .formula{margin:14px 0;padding:10px 16px;background:var(--panel);border-left:3px solid var(--accent);border-radius:0 var(--radius-sm,4px) var(--radius-sm,4px) 0;font-size:1.0625rem;line-height:1.6;font-variant-numeric:tabular-nums;overflow-x:auto;width:fit-content;max-width:100%}.lesson-page .lesson-content .theory-list{margin:0 0 12px;padding-left:1.4em;display:grid;gap:6px;max-width:72ch}.lesson-page .lesson-content .theory em{font-weight:600}.lesson-page .lesson-content .q{color:var(--code-number);font-weight:600;white-space:nowrap;font-variant-numeric:tabular-nums}.lesson-page .lesson-content .pin{color:var(--code-register);font-weight:600;white-space:nowrap}.lesson-page .lesson-content .lesson-warn{margin:20px 0 0;padding:10px 16px;background:var(--warning-bg);border-left:3px solid var(--warning-line);border-radius:0 var(--radius-sm,4px) var(--radius-sm,4px) 0;max-width:72ch}.lesson-page .lesson-content .lesson-warn>strong:first-child{color:var(--ink)}.lesson-page .lesson-wiring-schem{border:1px solid var(--line);border-radius:8px;background:#fff;margin:0 0 24px;padding:10px 14px 12px;max-width:1040px}.lesson-page .lesson-wiring-schem>summary{cursor:pointer;font-weight:650;padding:4px 0;color:var(--accent-strong)}.lesson-page .lesson-wiring-schem-zoom{display:block;width:100%;padding:0;margin:8px 0 6px;border:0;background:transparent;cursor:zoom-in;min-height:0}.lesson-page .lesson-wiring-schem-zoom img{display:block;width:100%;height:auto;max-width:100%;border-radius:4px}.lesson-page .lesson-wiring-schem .quiet{font-size:var(--text-sm)}@media(max-width:520px){.lesson-page .lesson-wiring-schem{padding:8px 10px 10px}}.quiz-facts{display:flex;flex-wrap:wrap;gap:12px 40px;margin:0 0 20px;padding:14px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.quiz-facts dt{font-size:var(--text-sm);color:var(--muted)}.quiz-facts dd{margin:2px 0 0;font-size:var(--text-lg);font-weight:600}.quiz-pass{color:var(--accent)}.quiz-fail{color:var(--rose)}.quiz-questions{list-style:none;margin:0;padding:0;display:grid;gap:16px;max-width:860px}.quiz-question fieldset{margin:0;padding:16px 18px;border:1px solid var(--line);border-left:4px solid var(--line);border-radius:var(--radius-md)}.quiz-question.is-right fieldset{border-left-color:var(--accent)}.quiz-question.is-wrong fieldset{border-left-color:var(--rose)}.quiz-question legend{display:contents}.quiz-number{display:block;font-size:var(--text-sm);color:var(--muted);margin-bottom:4px}.quiz-question legend{font-size:var(--text-lg);font-weight:600;line-height:1.4}.quiz-options{display:grid;gap:4px;margin-top:12px}.quiz-option{display:flex;align-items:center;gap:12px;min-height:44px;padding:8px 12px;border:1px solid transparent;border-radius:var(--radius-sm);cursor:pointer;font-weight:400}.quiz-option:hover{background:var(--panel)}.quiz-option input{flex:none;width:18px;height:18px;margin:0;accent-color:var(--accent)}.quiz-option-text{flex:1;min-width:0}.quiz-option.is-correct{border-color:var(--accent)}.quiz-option.is-chosen-wrong{border-color:var(--rose)}.quiz-mark{flex:none;font-size:var(--text-sm);font-weight:600;color:var(--accent)}.quiz-option.is-chosen-wrong .quiz-mark{color:var(--rose)}.quiz-feedback{margin:12px 0 0;padding-top:10px;border-top:1px solid var(--line);font-size:var(--text-sm);line-height:1.5}.quiz-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin:20px 0}@media(max-width:520px){.quiz-question fieldset{padding:12px}.quiz-option{align-items:flex-start;flex-wrap:wrap}.quiz-mark{flex-basis:100%;padding-left:30px}}.project-intro{display:flex;gap:26px;align-items:start;margin:25px 0 32px}.project-intro img{width:120px;height:170px;object-fit:contain}.project-intro>div{max-width:660px}@media(max-width:520px){.project-intro{gap:16px}.project-intro img{width:75px;height:107px}.project-intro p{font-size:var(--text-sm)}}.project-browser{display:grid;grid-template-columns:204px minmax(0,1fr);gap:28px;align-items:start}.project-browser .filters{display:flex;flex-direction:column;align-items:stretch;position:sticky;top:calc(var(--stemkids-height) + 20px);border-top:0;padding-top:0;gap:20px}.project-browser .filters #reset{align-self:flex-end}.project-browser .filters .local-search{order:-1}.project-results{min-width:0}.project-view-controls{display:flex;justify-content:space-between;align-items:center;gap:16px;border-bottom:1px solid var(--line);padding-bottom:14px}.project-view-controls label{display:flex;align-items:center;gap:10px;font-size:var(--text-sm);color:var(--muted)}.project-view-controls select{border:1px solid var(--line);border-radius:var(--radius-sm);padding:7px 10px;background:var(--bg);color:var(--ink);font-size:var(--text-sm);min-width:0}.project-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.project-card{border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;display:flex;flex-direction:column;color:var(--ink);min-width:0}.project-card:hover{text-decoration:none;border-color:var(--accent)}.project-media{position:relative;aspect-ratio:8/5;background:var(--media-bg);overflow:hidden;border-bottom:1px solid var(--line)}.project-media img{width:100%;height:100%;object-fit:contain}.project-media pre{margin:0;padding:15px;background:var(--panel);color:var(--muted);font:11px/1.7 Consolas,monospace;white-space:pre;overflow:hidden;height:100%}.project-copy{padding:16px;display:flex;flex-direction:column;flex:1}.project-copy h2{font-size:var(--text-lg);margin:9px 0;line-height:1.35;overflow-wrap:anywhere}.project-copy>p{font-size:var(--text-sm);color:var(--muted);margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.project-tags{display:flex;flex-wrap:wrap;gap:6px 12px;font-size:var(--text-xs);color:var(--accent)}.project-meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:var(--text-xs);color:var(--muted)}.project-meta span{display:flex;gap:5px;align-items:center}.project-meta svg{width:13px;height:13px}.project-grid .empty-state{grid-column:1/-1}.project-results .result-heading{padding:15px 0}.project-results #selection-label{display:none}@media(max-width:1000px){.project-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.project-browser{grid-template-columns:190px minmax(0,1fr);gap:22px}}@media(max-width:820px){.project-browser{display:block}.project-browser .filters{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr)) 36px;gap:12px;padding-bottom:18px;margin-bottom:18px}.project-browser .filters .local-search{grid-column:1/-1;order:0}.project-browser .filters #reset{grid-column:3;grid-row:1/3;align-self:center}.project-browser .filters label:nth-child(3){grid-column:1}.project-view-controls{margin-top:6px}}@media(max-width:520px){.project-grid{grid-template-columns:1fr}.project-view-controls{gap:10px}.project-view-controls label{font-size:var(--text-xs);gap:7px}.project-view-controls select{max-width:145px}.project-copy h2{font-size:var(--text-lg)}.project-copy>p{font-size:var(--text-sm)}.project-tags,.project-meta{font-size:var(--text-xs)}}.project-copy>.porting-note{display:block;font-size:var(--text-xs);border-left:2px solid var(--line);padding-left:10px;overflow:visible}.project-meta span{min-width:0;overflow-wrap:anywhere}.example-card .project-media{border-top:1px solid var(--line);border-bottom:0;flex-shrink:0}@media(max-width:520px){.catalog-row .project-command{font-size:var(--text-sm)}}.board-editor-group>.project-command{margin-top:12px}.project-card .project-activity{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px;font-size:var(--text-xs);color:var(--muted,var(--muted))}.project-card .project-category{font-weight:600;color:var(--accent,var(--rose))}.team-note-moderation{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:10px 0}.team-note-moderation .project-command{font-size:var(--text-sm)}.team-note-moderation ul{flex-basis:100%;padding-left:20px;overflow-wrap:anywhere}.catalog-browser .project-view-controls{border:0;padding:0;margin:0 0 14px}.catalog-controls .project-view-controls{flex-shrink:0;margin:0;gap:14px}.catalog-controls .project-view-controls label{flex-direction:column;align-items:start;gap:6px}.catalog-controls .project-view-controls .view-switch{align-self:end;margin-bottom:2px}.catalog-browser .project-results{scroll-margin-top:calc(var(--stemkids-height) + 18px)}.project-media-empty>svg:first-child{color:var(--rose)}.project-media-empty>svg:last-child{margin-left:auto}.project-meta .catalog-test{flex-basis:100%}.project-card .project-activity{padding-bottom:18px}.project-card .project-activity .project-phase{color:var(--rose);font-weight:600;flex-basis:100%}@media(max-width:820px){.catalog-browser .project-view-controls{margin-top:0}}@media(max-width:820px){.catalog-controls .project-view-controls{width:100%}}.project-tabs{margin-bottom:24px}.project-list-controls{display:flex;flex-wrap:wrap;gap:16px;align-items:end;padding:16px 0}.project-list-controls .field{margin:0}.project-list-controls .checkbox{min-height:42px}.team-project-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.team-project-card{display:flex;flex-direction:column;padding:22px;border:1px solid var(--line);border-radius:var(--radius-sm);color:var(--ink);min-width:0}.team-project-card:hover{text-decoration:none;border-color:var(--accent)}.team-project-card h2{margin:14px 0 8px;overflow-wrap:anywhere}.team-project-card>p{font-size:var(--text-sm);color:var(--muted);flex:1}.team-project-card footer{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:var(--text-xs);color:var(--muted);padding-top:18px}.project-card-meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:var(--text-xs);color:var(--muted)}.project-card-meta span:first-child{color:var(--rose)}.project-overview{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:40px}.project-overview section{min-width:0}.project-summary{border-left:1px solid var(--line);padding-left:24px;font-size:var(--text-sm)}.project-summary h2{font-size:var(--text-lg);margin-bottom:12px}.project-summary h3{font-size:var(--text-md);margin-top:24px}.project-summary progress{display:block;width:100%;margin-top:12px;accent-color:var(--accent);height:8px}.project-files{padding:0;list-style:none}.project-files li{display:flex;gap:16px;align-items:center;border-bottom:1px solid var(--line);padding:18px 0}.project-files li>div{flex:1;min-width:0;overflow-wrap:anywhere}.project-files small{display:block;margin-top:4px}.forum-scope{max-width:680px}@media(max-width:1000px){.team-project-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:820px){.project-overview{display:block}.project-summary{border-left:0;border-top:1px solid var(--line);padding:20px 0 0;margin-top:24px}.project-tabs{position:sticky;top:var(--stemkids-height);background:var(--bg);z-index:5}}@media(max-width:520px){.team-project-grid{grid-template-columns:1fr}.project-list-controls{gap:12px}.project-list-controls .grow{flex-basis:100%}.team-project-card{padding:18px}}@media(max-width:520px){.task-actions .project-command{min-height:44px}}@media(max-width:520px){.composer-actions .project-command{flex:1;min-height:44px;justify-content:center}}@media(max-width:520px){.project-files li{gap:10px;align-items:start;flex-wrap:wrap}.project-files li>div{flex-basis:75%}}.project-command{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg);color:var(--ink);font:inherit;font-size:var(--text-sm);min-height:40px;cursor:pointer}.project-command:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}.project-command.primary{background:var(--accent);color:var(--bg);border-color:var(--accent)}main.process-page{max-width:1800px;width:100%;padding:18px 24px;margin-inline:auto}.process-surface{min-width:0}.process-heading{display:flex;gap:16px;justify-content:space-between;align-items:center;margin-bottom:18px}.process-heading h1{font-size:var(--text-xl);margin:0}.process-heading p{font-size:var(--text-sm);color:var(--muted);margin:6px 0}.process-tabs{margin-bottom:18px}.process-tabs button{font-weight:600}@media(max-width:820px){main.process-page{padding:12px}}@media(max-width:820px){.process-heading{display:block}.process-heading h1{font-size:var(--text-lg)}}.account-mail{border-block:1px solid var(--line));padding:14px 0;margin:18px 0}.account-mail summary{cursor:pointer;margin-top:14px}.account-mail .account-list{max-height:300px;overflow:auto}.account-mail [data-mail-status=failed],.account-mail [data-mail-status=unavailable]{color:var(--danger)}.account-mail .account-item{min-width:0;overflow-wrap:anywhere}.account-mail .account-item span{display:block;font-size:var(--text-sm);margin:3px 0}.account-body{padding:20px}.account-password{display:flex;gap:6px;align-items:center}.account-password input{flex:1}.account-password input::-ms-reveal{display:none}.account-tabs button[aria-pressed=true]{border-color:var(--accent);color:var(--accent);font-weight:700}.account-status{padding:10px 0;white-space:pre-line;overflow-wrap:anywhere;color:var(--accent);margin:0}.account-status:empty{display:none}.account-status[data-error=true]{color:var(--danger)}.account-note{font-size:var(--text-sm);color:var(--muted);overflow-wrap:anywhere}.account-list{padding:0;margin:8px 0 20px;list-style:none}.account-list li{padding:12px 0;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;flex-wrap:wrap}.account-list .account-item{flex:1 1 200px;overflow-wrap:anywhere}.account-list small{display:block;color:var(--muted)}.account-list .account-row-actions{margin:0;flex-shrink:0;max-width:100%}@media(max-width:520px){.account-body{padding:14px}}[data-account-dashboard],[data-account-inbox]{border-top:1px solid var(--line);margin-top:18px;padding-top:8px}.account-list a{min-width:0;overflow-wrap:anywhere}.account-list small{display:block}.account-list li{min-width:0;gap:10px}[data-account-dashboard] .account-list li{align-items:start}.board-profile-section{padding:22px 0;border-top:1px solid var(--line,var(--line))}.board-profile-section h2{font-size:var(--text-xl)}#legal-main{max-width:960px;margin:32px auto;padding:0 20px;color:var(--ink)}#legal-main h1{font-size:var(--text-2xl)}#legal-main h2{font-size:var(--text-lg)}#legal-main label{display:grid;gap:6px;margin:14px 0}#legal-main input,#legal-main textarea,#legal-main select{font:inherit;box-sizing:border-box;max-width:100%;width:100%;padding:10px;border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:var(--bg);color:var(--ink)}#legal-main textarea{min-height:220px;resize:vertical}#legal-main button{font:inherit;cursor:pointer;padding:10px 16px;background:var(--accent);color:#fff;border:0;border-radius:var(--radius-sm)}#legal-main button:disabled{opacity:.6;cursor:wait}#legal-main .legal-check{display:flex;align-items:flex-start;gap:10px}#legal-main .legal-check input{width:18px;height:18px;flex:0 0 18px}.legal-text{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.65;margin:18px 0 36px}.legal-warning{border-left:3px solid var(--warning-line);padding:12px;background:var(--warning-bg)}.legal-entry{border-top:1px solid var(--line);padding:18px 0}#legal-status[data-error=true]{color:var(--danger)}#legal-main input:focus-visible,#legal-main textarea:focus-visible,#legal-main button:focus-visible,#legal-main a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}@media(max-width:520px){#legal-main{margin:20px auto;padding:0 16px}#legal-main h1{font-size:var(--text-xl)}}@media(max-width:520px){.legal-actions>*{max-width:100%}}
