@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial}}}@layer theme{:root,:host{--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.hidden{display:none}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}}.catalog>.lesson-card+.lesson-card{margin-top:18px}.button-demo{border-top:1px solid var(--line);background:#f7f7ee;flex-wrap:wrap;align-items:center;gap:15px;padding:15px 24px;display:flex}.button-demo button{background:#fffdf7}.button-demo button[aria-pressed=true]{background:#e5ecd9;border-color:#789569}.button-demo p{color:#6d7b70;flex:1;min-width:180px;margin:0;font-size:10px;line-height:1.7}.led-off{opacity:.32}.led-on{filter:drop-shadow(0 0 14px #ff4638)}.supplementary-materials{border-top:1px solid var(--line);margin:36px 0 40px;padding-top:28px}.materials-heading{align-items:center;gap:13px;margin-bottom:20px;display:flex}.materials-heading .eyebrow{margin-bottom:7px;font-size:9px}.materials-heading h2{letter-spacing:-.5px;margin:0;font-size:21px}.material-card{border:1px solid var(--line);background:#fcfcf7;border-radius:12px;justify-content:space-between;align-items:center;gap:28px;padding:25px;display:flex}.material-copy{max-width:760px}.material-copy h3{margin:13px 0 10px;font-size:18px}.material-copy p{color:#6d7b70;margin:0;font-size:12px;line-height:1.8}.material-copy .material-note{color:#786640;background:#f3f0e4;border-left:3px solid #d3b87f;border-radius:0 6px 6px 0;margin-top:14px;padding:13px 16px}.material-actions{flex-direction:column;flex-shrink:0;gap:12px;display:flex}@media (max-width:760px){.material-card{flex-direction:column;align-items:stretch;gap:20px;padding:20px}.material-actions{flex-flow:wrap}.material-actions a{white-space:nowrap;flex:1;font-size:11px}}:root{--ink:#233c34;--muted:#778076;--paper:#f7f7ef;--green:#2d6250;--line:#dedfd3}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;margin:0;font-family:Arial,Helvetica,sans-serif}button,a,input{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{font:inherit;cursor:pointer}a{color:inherit;text-decoration:none}button:disabled{cursor:not-allowed;opacity:.4}a:focus-visible,button:focus-visible,input:focus-visible,pre:focus-visible{outline-offset:5px;outline:3px solid #e4a344}button{border:0}h1,h2,p{margin-top:0}.brand{letter-spacing:-1.5px;white-space:nowrap;align-items:center;font-size:26px;font-weight:800;display:flex}.brand span{margin-left:5px;font-weight:400}.brand i{background:#e3a24e;border-radius:50%;width:7px;height:7px;margin:0 0 12px 4px}.home-header,.lesson-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;height:92px;padding:0 max(5vw,24px);display:flex}.header-link{align-items:center;gap:12px;font-size:13px;display:flex}.home-main{max-width:1400px;margin:auto;padding:0 5vw}.hero{grid-template-columns:1fr 1.15fr;align-items:center;gap:4%;padding:75px 0 85px;display:grid}.eyebrow{letter-spacing:2px;color:var(--green);align-items:center;gap:9px;font-size:10px;font-weight:700;display:flex}.hero h1{letter-spacing:-3px;margin:26px 0;font-size:clamp(40px,4.4vw,66px);line-height:1.07}.hero h1 span{color:#678469}.hero-copy>p:not(.eyebrow){color:#778076;max-width:405px;margin-bottom:28px;font-size:16px;line-height:1.8}.primary,.secondary{border-radius:8px;justify-content:center;align-items:center;gap:15px;padding:15px 21px;font-size:13px;font-weight:600;display:inline-flex}.primary{background:var(--green);color:#fff;transition:background .2s;box-shadow:0 3px #204a3b}.primary:hover{background:#244e40}.secondary{border:1px solid var(--line);background:0 0}.hero-proof{color:#87917e;align-items:center;gap:7px;margin-top:22px;font-size:11px;display:flex}.hero-visual{background:#eeefe4;border:1px solid #e0e2d5;border-radius:20px;padding:19px 6px 24px;position:relative;transform:rotate(-1deg)}.visual-label{letter-spacing:1.5px;color:#7b8875;align-items:center;gap:8px;padding:0 18px;font-size:9px;display:flex}.visual-label span{margin-left:auto}.circuit-svg{width:100%;height:auto;display:block;overflow:visible}.hero-visual .circuit-svg{padding:10px 0}.floating-note{background:#fffefa;border:1px solid #e6e6db;border-radius:10px;align-items:center;gap:14px;padding:17px 20px;font-size:11px;line-height:1.7;display:flex;position:absolute;bottom:15px;right:-15px;transform:rotate(3deg);box-shadow:0 7px 25px #31452a0d}.catalog{border-top:1px solid var(--line);padding-top:35px;scroll-margin-top:25px}.catalog-heading{justify-content:space-between;align-items:center;gap:20px;margin-bottom:25px;display:flex}.catalog-heading h2{letter-spacing:-.8px;margin:0;font-size:25px}.catalog-heading>span{color:var(--muted);font-size:11px}.lesson-card{border:1px solid var(--line);background:#fdfdf8;border-radius:13px;grid-template-columns:160px 1fr 210px;align-items:center;gap:30px;padding:30px;transition:box-shadow .2s,transform .2s;display:grid}.lesson-card:hover{transform:translateY(-3px);box-shadow:0 10px 25px #3046320a}.card-number{letter-spacing:-3px;color:#678267;background:#e9eee1;border-radius:8px;flex-direction:column;justify-content:center;align-items:center;height:145px;font-size:62px;font-weight:300;display:flex}.card-number span{letter-spacing:1.5px;margin-top:10px;font-size:8px}.badge{color:#5d7454;background:#e8eddf;border-radius:5px;padding:6px 10px;font-size:10px;display:inline-flex}.lesson-card h2{letter-spacing:-.7px;margin:12px 0 9px;font-size:23px}.lesson-card p{color:var(--muted);max-width:440px;font-size:13px;line-height:1.7}.card-meta{color:#7c8779;gap:20px;font-size:11px;display:flex}.card-meta span{align-items:center;gap:7px;display:flex}.card-action{justify-content:space-between;align-items:center;gap:10px;font-size:13px;font-weight:600;display:flex}footer{color:#8a9184;justify-content:space-between;padding:45px 0 25px;font-size:11px;display:flex}footer span{font-size:10px}.lesson-header{height:76px}.back-link,.text-button{color:#6c7a6e;background:0 0;align-items:center;gap:6px;font-size:12px;display:flex}.lesson-shell{max-width:1450px;margin:auto;padding:35px 5vw 0}.lesson-heading{justify-content:space-between;align-items:center;gap:15px;display:flex}.lesson-heading h1{letter-spacing:-1px;margin-bottom:0;font-size:27px}.lesson-heading .eyebrow{margin-bottom:12px}.progress-row{align-items:center;gap:17px;margin:25px 0 30px;display:flex}.progress-track{background:#e1e5d7;border-radius:10px;flex:1;height:5px;overflow:hidden}.progress-track>div{background:#759668;height:100%;transition:width .3s}.progress-row>span{color:#7f897b;min-width:90px;font-size:10px}.learning-grid{border:1px solid var(--line);background:#fcfcf7;border-radius:15px;grid-template-columns:minmax(0,1.5fr) minmax(320px,1fr);display:grid;overflow:hidden}.workspace{border-right:1px solid var(--line);background:#eff1e7;align-self:start}.workspace-top,.workspace-bottom{color:#82907c;justify-content:space-between;align-items:center;gap:12px;padding:21px 24px;font-size:10px;display:flex}.workspace-top>span:first-child{color:#4b614b;align-items:center;gap:7px;font-size:12px;display:flex}.workspace-top>span:last-child{letter-spacing:1px;font-size:8px}.live-dot,.legend-dot{background:#7b9b63;border-radius:50%;width:6px;height:6px;display:inline-block}.workspace .circuit-svg{min-height:300px}.workspace-bottom{border-top:1px solid #e1e5d6;padding:17px 24px;font-size:8px}.workspace-bottom>span{align-items:center;gap:5px;display:flex}.legend-dot.blue{background:#3b78db}.legend-dot.dark{background:#334155}.instructions{min-height:460px;padding:32px 30px}.step-tag{color:#7a8b66;background:#edf0e4;border-radius:4px;margin:17px 0;padding:6px 9px;font-size:10px;display:inline-block}.instructions h2{letter-spacing:-1px;margin-bottom:18px;font-size:30px;line-height:1.15}.step-text{color:#6d7b70;font-size:14px;line-height:1.85}.tip{color:#9b8958;background:#f3f0e4;border:1px solid #e9e4d1;border-radius:8px;gap:12px;margin-top:25px;padding:17px;display:flex}.tip svg{flex-shrink:0}.tip strong{color:#786640;font-size:11px}.tip p{color:#8a816b;margin:6px 0 0;font-size:11px;line-height:1.8}.step-navigation{justify-content:space-between;align-items:center;gap:15px;margin-top:25px;display:flex}.step-dots{gap:8px;display:flex}.step-dots>span{color:#8b9685;border:1px solid #dedfd1;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:9px;display:flex}.step-dots>span.current{color:#46633d;background:#e5ecd9;border-color:#789569}.step-dots>span.done{color:#fff;background:#77956c;border-color:#77956c}.lesson-footnote{text-align:center;color:#98a08f;margin:28px 0;font-size:10px}.code-viewer{color:#d5e6cd;background:#21372f;border-radius:8px;margin-top:20px;font-size:11px;overflow:hidden}.code-viewer>div{border-bottom:1px solid #ffffff1a;justify-content:space-between;padding:12px;display:flex}.code-viewer small{color:#93a68e;margin-left:10px}.code-viewer button{color:#cbdac4;background:0 0;align-items:center;gap:6px;font-size:10px;display:flex}.code-viewer pre{tab-size:2;margin:0;padding:15px;line-height:1.7;overflow:auto}.code-viewer>span{padding:0 12px;font-size:10px;display:block}.quiz fieldset{border:0;margin:20px 0;padding:0}.quiz legend{margin-bottom:10px;font-size:12px;font-weight:600;line-height:1.6}.quiz label{border:1px solid var(--line);cursor:pointer;border-radius:6px;align-items:center;gap:9px;margin:7px 0;padding:12px 10px;font-size:11px;display:flex}.quiz input{accent-color:var(--green)}.quiz label.selected{background:#eaf0e2;border-color:#8ba77d}.quiz p{margin:10px 0;font-size:11px;line-height:1.6}.correct{color:#3f784d}.incorrect{color:#ac613a}.completion{text-align:center;max-width:650px;margin:75px auto;padding:30px}.completion .eyebrow{justify-content:center;margin-top:25px}.completion h2{letter-spacing:-2px;font-size:46px;line-height:1.1}.completion>p:not(.eyebrow){color:var(--muted);line-height:1.8}.completion>.primary{margin:20px auto}.completion>a:last-child{margin:15px;font-size:12px;display:block}.success-icon{color:#5e814f;background:#e4ecd8;border-radius:50%;padding:25px;display:inline-flex}.part-highlight{filter:drop-shadow(0 0 7px #cfab5655)}.pin-highlight{animation:2s ease-in-out infinite pulse}.led-blink{animation:2s step-end infinite blink}@keyframes blink{0%,49%{filter:drop-shadow(0 0 14px #ff4638);opacity:1}50%,to{opacity:.38}}@keyframes pulse{50%{opacity:.5}}@media (min-width:1500px){.workspace .circuit-svg{max-height:520px}}@media (max-width:1000px){.hero{gap:10px}.hero h1{font-size:46px}.lesson-card{grid-template-columns:120px 1fr 160px;gap:20px;padding:22px}.instructions{padding:25px 22px}.instructions h2{font-size:25px}.workspace-bottom{flex-wrap:wrap}.step-dots{gap:4px}}@media (max-width:760px){.home-header{height:75px}.header-link{font-size:10px}.hero{grid-template-columns:1fr;gap:40px;padding:40px 0 50px}.hero h1{font-size:50px}.hero-copy>p:not(.eyebrow){font-size:14px}.hero-visual{width:100%;max-width:560px;margin:auto}.floating-note{right:0}.catalog-heading{align-items:start}.catalog-heading h2{font-size:23px}.catalog-heading>span{display:none}.lesson-card{grid-template-columns:75px 1fr;gap:17px;padding:18px}.card-number{height:100%;min-height:140px;font-size:42px}.card-number span{letter-spacing:0;font-size:6px}.lesson-card h2{font-size:20px}.lesson-card p{font-size:12px}.card-action{border-top:1px solid var(--line);grid-column:1/-1;padding-top:18px}footer{gap:15px;line-height:1.6}.lesson-header{height:65px;padding:0 18px}.lesson-header .brand{font-size:22px}.back-link{gap:0;font-size:0}.text-button{font-size:10px}.lesson-shell{padding:25px 4vw 0}.lesson-heading h1{font-size:23px}.lesson-heading>.badge{display:none}.learning-grid{grid-template-columns:1fr}.workspace{border-right:0;border-bottom:1px solid var(--line)}.workspace .circuit-svg{min-height:0}.workspace-top{padding:16px 18px}.workspace-bottom{padding:13px 18px}.instructions{min-height:0;padding:25px}.instructions .eyebrow{margin-bottom:0}.step-tag{margin:14px 0}.step-navigation{background:var(--paper);z-index:2;margin-top:0;padding:15px 0;position:sticky;bottom:0}.step-navigation .primary,.step-navigation .secondary{padding:13px;font-size:11px}.step-dots{display:none}.lesson-footnote{margin:13px 0 25px}.completion{margin:35px auto}.completion h2{font-size:37px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}
