@font-face{font-family:BrickRounded;src:local('Arial Rounded MT Bold');font-weight:700 900;font-display:swap}
:root{--ink:#252832;--paper:#fffcf1;--red:#ba3d2e;--blue:#315abc;--yellow:#ffda51;--muted:#58606a;color:var(--ink);background:var(--paper);font-family:system-ui,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.6}*{box-sizing:border-box}body{margin:0}a{color:inherit}button,input,select{font:inherit;color:inherit}button,a,select,input{touch-action:manipulation}button,select,input{min-height:46px}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--blue);outline-offset:4px}[hidden]{display:none!important}.skip{position:absolute;top:-80px;left:20px;background:white;padding:10px;z-index:10}.skip:focus{top:8px}header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px clamp(20px,5vw,80px);border-bottom:1px solid #25283218}header nav{display:flex;gap:24px;flex-wrap:wrap}header nav a{min-height:44px;display:inline-flex;align-items:center;text-decoration:none;font-weight:700}header nav a[aria-current]{color:var(--red);text-decoration:underline;text-underline-offset:6px}.brand{display:inline-flex;align-items:center;gap:9px;font-family:BrickRounded,system-ui;font-size:27px;font-weight:900;letter-spacing:-1px;text-decoration:none}main{max-width:1460px;margin:auto;padding:0 clamp(20px,5vw,80px)}h1,h2,h3{font-family:BrickRounded,system-ui;line-height:1.13;letter-spacing:-.04em}h1{font-size:clamp(42px,5.2vw,76px);margin:12px 0 22px;font-weight:900}h1 em{font-style:normal;color:var(--red)}h2{font-size:clamp(28px,3vw,42px);margin:10px 0 20px}h3{font-size:24px;letter-spacing:-.025em;margin:10px 0}.eyebrow{font-size:11px;font-weight:900;letter-spacing:.13em;color:var(--red)}.hero{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:55px 0 65px}.intro{max-width:540px;font-size:19px;color:var(--muted)}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 20px;border-radius:14px;text-decoration:none;border:0;font-weight:800}.primary{background:var(--red);color:white}.secondary{background:var(--yellow)}#hero-art{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:center}#hero-art a{display:block;text-decoration:none;background:#eee6f6;border-radius:26px;overflow:hidden;transform:rotate(-3deg)}#hero-art a:nth-child(2){transform:rotate(5deg);margin-top:60px;background:#dfeadd}#hero-art svg,#hero-art img{display:block;width:100%;height:255px;object-fit:contain}#hero-art span{display:block;padding:5px 18px 18px;font-weight:800;font-size:15px}.section-title{display:flex;justify-content:space-between;align-items:end;gap:24px}.section-title>p{color:var(--muted)}.browse{padding-bottom:70px;scroll-margin-top:20px}#filters{display:flex;flex-wrap:wrap;align-items:end;gap:12px;padding:18px;background:#f3efdf;border-radius:20px}label{display:flex;flex-direction:column;gap:5px;font-size:13px;font-weight:800}select,input{background:white;border:1px solid #b8b9b2;border-radius:10px;padding:10px 12px;width:100%;min-width:130px}label.search{flex:1;min-width:215px}.text-button{border:0;background:transparent;font-weight:700;text-decoration:underline;padding:10px}.guidance,.fine{font-size:13px;color:var(--muted);max-width:880px}#count{font-weight:750;font-size:14px}#project-grid h2{font-size:29px;margin-top:36px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.card{display:flex;flex-direction:column;border:1px solid #25283218;border-radius:24px;overflow:hidden;background:white;text-decoration:none;box-shadow:0 5px 12px #292b3407}.card svg,.card img{width:100%;height:235px;display:block;object-fit:contain}.card-art{background:var(--tint)}.card-body{padding:19px;flex:1;display:flex;flex-direction:column;align-items:start}.card h3{margin:10px 0;font-size:23px}.tag{display:inline-block;background:#f3f2e9;border-radius:99px;font-size:11px;padding:4px 9px;font-weight:800}.card p{margin:4px 0 12px;font-size:14px;color:var(--muted)}.card .learning{border-top:1px solid #eee;padding-top:12px;margin-top:auto;font-weight:650;color:var(--ink);font-size:13px}.card .stats{font-size:12px;margin:0 0 12px}.empty{padding:40px;border-radius:24px;background:#f3efdf}.detail-top{display:grid;grid-template-columns:1.2fr 1fr;gap:36px;align-items:center;margin:25px 0}.detail-top svg{width:100%;max-height:470px;border-radius:24px}.detail-top h1{font-size:clamp(36px,4vw,58px)}.detail-top .facts{font-weight:700}.detail-layout{display:grid;grid-template-columns:245px minmax(0,1fr);gap:36px;margin:40px 0 70px}.project-nav{align-self:start;position:sticky;top:20px;padding:20px;border-radius:20px;background:#f3efdf}.project-nav a{display:block;padding:10px 0;min-height:44px;font-weight:700}.project-nav p{font-size:13px}.content-section{margin-bottom:40px;scroll-margin-top:24px}.parts{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0;list-style:none}.parts li{display:flex;align-items:center;gap:10px;background:white;border-radius:12px;padding:12px;font-size:14px}.swatch{display:inline-block;width:24px;height:18px;flex-shrink:0;border:1px solid #25283240;border-radius:4px;background:var(--brick)}.parts b{margin-left:auto}.lesson{background:white;padding:30px;border-radius:24px;border:1px solid #25283218}.lesson h2{margin-top:0}.lesson h3{font-family:system-ui;font-size:19px;margin-top:24px;letter-spacing:-.015em}.lesson .goal{font-size:20px;color:var(--blue);font-weight:700}.lesson li{padding:8px 0 10px 8px}.lesson ol{padding-left:22px}.note{background:#fff5ce;border-radius:14px;padding:16px;font-size:14px}.classroom-link{margin-top:22px;border-top:2px solid var(--paper);padding-top:15px}.step-picture{width:100%;max-height:400px}.step-picture svg{height:370px;max-width:100%;display:block;margin:auto}.step-controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.step-controls input{flex:1;min-width:140px;accent-color:var(--red)}#step-description{font-weight:700}footer{padding:35px clamp(20px,5vw,80px);border-top:1px solid #25283218}footer p{margin:8px 0}#detail>.text-button{margin-top:20px}.print-action{margin-top:15px}.print-only{display:none}
@media(max-width:1000px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero{gap:25px}.hero svg,.hero img{height:220px!important}.detail-layout{grid-template-columns:190px minmax(0,1fr)}}
@media(max-width:700px){header{align-items:start;flex-direction:column;gap:8px;padding:16px 20px}header nav{gap:24px}.hero{grid-template-columns:1fr;padding:30px 0 40px;gap:16px}.hero h1{font-size:44px}#hero-art a:nth-child(2){margin-top:20px}.hero svg,.hero img{height:180px!important}.section-title{align-items:start;flex-direction:column;gap:0}.grid{grid-template-columns:1fr}.card svg,.card img{height:255px}#filters label{flex:1;min-width:130px}#filters .search{flex-basis:100%}.detail-top,.detail-layout{grid-template-columns:1fr;gap:20px}.project-nav{position:static;display:flex;flex-wrap:wrap;gap:6px 20px}.project-nav .eyebrow,.project-nav p{flex-basis:100%;margin:0}.project-nav a{padding:6px 0}.parts{grid-template-columns:1fr}.lesson{padding:22px}.step-picture svg{height:290px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{@page{size:auto;margin:15mm}body{background:white;font-size:11pt}header,footer,.project-nav,.no-print,.detail-top,.build-instructions,#catalog,#parts,.print-action{display:none!important}main{padding:0}.detail-layout{display:block;margin:0}.lesson{border:0;padding:0}.lesson h2{font-size:26pt}.lesson h3{break-after:avoid}.lesson p,.lesson li{break-inside:avoid}.lesson .goal{font-size:13pt}.print-only{display:block}.print-only.brand img{width:38px;height:38px}#detail>.text-button{display:none}.classroom-link{display:none}}

@media print{.lesson-illustration{width:110px;height:80px;object-fit:contain;float:right;margin:0 0 8px 16px}.lesson .goal{font-size:12pt}.lesson p,.lesson li{line-height:1.35}.lesson h3{margin-top:14px;font-size:12pt}.lesson ol{margin-top:12px;margin-bottom:12px}.lesson li{padding:4px 0 5px 6px}}