html{scroll-behavior:smooth}body{--green:#e3ecd8;--blue:#dce8ef}.class-hero{display:grid;grid-template-columns:1.1fr 1fr;gap:70px;align-items:center;padding:70px 0 85px}.class-hero h1{font-size:clamp(42px,5.5vw,78px);line-height:1.02;letter-spacing:-3.5px;margin:20px 0 28px}.class-hero h1 em{font-style:normal;color:var(--red,#e9493b)}.class-hero p:not(.eyebrow):not(.fine){max-width:520px;line-height:1.65}.class-hero .intro{font-size:22px}.class-hero .primary{margin-top:18px}.wonder-board{background:#f3e7cb;border-radius:40px;padding:65px 26px 26px;display:grid;grid-template-columns:1fr 1fr;gap:14px;position:relative;transform:rotate(2deg)}.board-note{position:absolute;top:-27px;left:21px;background:#ffd641;padding:18px 23px;transform:rotate(-9deg);font-size:13px;line-height:1.25;font-weight:900;letter-spacing:1px;box-shadow:0 5px 0 #20252611}.subject-tile{min-height:162px;border-radius:21px;padding:18px;display:flex;flex-direction:column;gap:8px;box-shadow:inset 0 -6px #0000000b}.subject-tile small{border:2px solid #2224;border-radius:50%;width:35px;height:35px;display:grid;place-items:center;font-size:15px;font-weight:900}.subject-tile b{font-size:23px;letter-spacing:-.5px}.subject-tile span{font-size:12px}.sci{background:#cadab3}.tech{background:#d3e1ec}.eng{background:#f9aaa0}.math{background:#ffdb57}.art-thread{grid-column:span 2;text-align:center;font-weight:800;font-size:14px;margin:13px 0 2px}.class-manifesto{border-top:1px solid #2222;border-bottom:1px solid #2222;padding:58px 0}.class-manifesto>p:not(.eyebrow){max-width:650px;font-size:19px;line-height:1.6}.teacher-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:48px;margin-top:42px}.teacher-steps article>span{font-family:monospace;color:#de463a;font-weight:800}.teacher-steps h3{font-size:22px;margin:12px 0}.teacher-steps p{line-height:1.6;font-size:15px}#planner,#parts{padding:70px 0 20px;scroll-margin-top:30px}.planner-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}fieldset{border:1px solid #24262b22;border-radius:22px;padding:24px;margin:0 0 20px;background:white}legend{font-size:21px;font-weight:800;padding:0 8px}legend span{display:inline-grid;place-items:center;background:#ffd641;border-radius:50%;width:27px;height:27px;font-size:14px;margin-right:7px}fieldset>p{font-size:14px;line-height:1.6;margin-top:4px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}label{font-size:13px;font-weight:700;display:flex;flex-direction:column;gap:7px}select,input[type=number],input[type=search]{background:#fffcf4;border:1px solid #2223;border-radius:10px;padding:12px;font:inherit;font-size:14px;width:100%;color:#292b34;min-height:44px;box-sizing:border-box}.inventory-row{display:grid;grid-template-columns:1.3fr 1fr .7fr 36px;gap:8px;align-items:end;margin:14px 0}.inventory-row button{min-width:36px;height:44px;padding:0;background:#f9ece5;font-size:20px;border:0;border-radius:8px;cursor:pointer}.row-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.secondary{border:1px solid #2223;background:#fff;border-radius:10px;padding:11px 14px;font-weight:700;cursor:pointer}.text-button{border:0;background:transparent;text-decoration:underline;padding:10px 0;font-weight:700;cursor:pointer}.photo-picker{border:1px dashed #24262b55;padding:15px;border-radius:12px;cursor:pointer;background:#fffbed}.photo-picker input{font-size:12px;max-width:100%}#class-photo-preview{max-height:220px;width:100%;object-fit:contain;margin-top:12px}.lesson-target{background:#edf1e4;padding:16px;border-radius:12px;margin-top:22px;font-size:14px;line-height:1.6}.lesson-target b{display:block;font-size:17px}.check-row{display:flex;flex-direction:row;align-items:flex-start;line-height:1.6;font-weight:500;margin-top:16px}.check-row input{margin:4px 4px 0 0;accent-color:#d94338;min-width:18px;min-height:18px}#class-error{color:#a32925;line-height:1.5}#lesson-form>.primary{width:100%;border:0;cursor:pointer}.waiting-card{background:#edeedc;border-radius:24px;min-height:430px;padding:40px;display:flex;flex-direction:column;justify-content:center}.waiting-card h3{font-size:32px;letter-spacing:-1px;line-height:1.1;margin:10px 0 20px}.waiting-card p{line-height:1.65}.big-star{font-size:84px;color:#e7483e;line-height:1;margin-bottom:25px}.lesson-card{border-radius:24px;background:#fff;padding:26px;border:1px solid #2222}.lesson-card h3{font-size:32px;line-height:1.1;letter-spacing:-1px;margin:14px 0}.lesson-card h4{font-size:17px;margin:25px 0 7px}.lesson-card p,.lesson-card li{line-height:1.65;font-size:14px}.lesson-card .primary{width:100%;border:0;cursor:pointer;font-size:14px;margin:10px 0}.lesson-card details{padding:16px;background:#fff4d9;border-radius:12px;margin:20px 0}.lesson-card summary{cursor:pointer;font-weight:800;font-size:14px}.teacher-example{height:170px;width:100%}.catalog-note{background:#e8ece0;padding:20px;border-radius:14px;line-height:1.6;font-size:14px;margin:25px 0}.search-label{max-width:620px;margin:25px 0}.parts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.part-card{border:1px solid #2222;border-radius:16px;padding:20px;background:white}.part-card h3{font-size:19px;line-height:1.2}.part-card p{font-size:13px;line-height:1.6}.part-card .eyebrow{font-size:9px;letter-spacing:1px;color:#a43e31}.part-card a{font-size:12px;font-weight:700;display:block;margin-top:12px}#parts>details{margin:25px 0;line-height:1.7;font-size:14px}.class-closing{text-align:center;background:#f7e8af;border-radius:28px;padding:55px 30px;margin:55px 0}.class-closing h2{font-size:42px}.class-closing .primary{margin-top:20px}.print-packet{display:none}.student-display{position:fixed;inset:0;overflow:auto;background:#fffcf4;z-index:100}.student-toolbar{max-width:850px;margin:20px auto;display:flex;justify-content:space-between;padding:0 20px}.student-display-body,.packet{max-width:760px;margin:auto;background:#fff;padding:42px}.packet h1{font-size:38px;letter-spacing:-1px;line-height:1.1}.packet h2{font-size:20px;line-height:1.2;margin:25px 0 10px}.packet p{white-space:pre-line;line-height:1.65}.sketch-space{height:160px;border:1px dashed #666;margin:18px 0}.answer-space{height:90px;background:repeating-linear-gradient(#fff,#fff 29px,#ddd 30px)}.packet .packet-meta{font-size:13px;color:#444}.packet .eyebrow{font-size:11px}.packet ul{padding-left:22px}.student-display[hidden]{display:none!important}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #3468aa;outline-offset:3px}
@media(max-width:900px){.class-hero{gap:32px}.subject-tile{padding:13px;min-height:145px}.subject-tile b{font-size:19px}.planner-grid{grid-template-columns:1fr}.parts-grid{grid-template-columns:repeat(2,1fr)}.class-hero h1{letter-spacing:-2px}.teacher-steps{gap:22px}}
@media(max-width:650px){.class-hero{grid-template-columns:1fr;padding:35px 0 45px}.class-hero h1{font-size:47px}.class-hero .intro{font-size:19px}.wonder-board{max-width:440px;margin:25px 5px 0;transform:none}.teacher-steps{grid-template-columns:1fr;gap:15px}.parts-grid{grid-template-columns:1fr}.form-grid{gap:12px}fieldset{padding:18px}.inventory-row{grid-template-columns:1.2fr 1fr .7fr 32px;gap:4px}.inventory-row select,.inventory-row input{padding:9px 4px}.inventory-row label{font-size:11px}.class-closing h2{font-size:29px}.packet{padding:25px}.packet h1{font-size:30px}header nav{gap:12px!important}header nav a{font-size:12px}}
@media print{@page{size:letter;margin:16mm}html,body{background:white!important;font-size:11pt}.no-print,.student-display{display:none!important}body:not([data-print=teacher]) #student-print,body[data-print=teacher] #teacher-print{display:block}.packet{max-width:none;padding:0;margin:0;border:0}.packet h1{font-size:26pt}.packet h2{font-size:14pt;break-after:avoid}.packet p{font-size:11pt;line-height:1.45;orphans:3;widows:3}.packet section{break-inside:avoid}.sketch-space{height:38mm}.answer-space{height:27mm;background:none;border-bottom:1px solid #aaa}.packet a{overflow-wrap:anywhere;font-size:9pt}.packet footer{display:block;border:0;padding:8px 0;font-size:8pt}.teacher-example{height:40mm}header{display:none}main{display:none}}

/* Photo-first inventory. The count table is a review tool, not the starting task. */
.capture-card{background:#fff6d7;border:1px solid #e5d291;border-radius:18px;padding:22px}.capture-card h3{font-size:26px;letter-spacing:-.8px;margin:8px 0 14px}.capture-card p{line-height:1.65;font-size:14px}.capture-actions{display:flex;gap:10px;flex-wrap:wrap}.capture-action{position:relative;display:flex;align-items:center;justify-content:center;margin:0;min-height:48px;cursor:pointer;font-size:15px;overflow:hidden}.capture-action.primary{background:#c43a2b;gap:15px;padding:15px 20px}.capture-action input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer;margin:0;padding:0}.capture-action:focus-within{outline:3px solid #3468aa;outline-offset:3px}#scan-status{font-size:14px;line-height:1.65;margin:18px 0 4px;font-weight:600}#scan-state[aria-busy=true] #scan-status::before{content:'◌ ';font-size:18px}.scan-review{border:1px solid #2223;border-radius:16px;padding:18px;margin:16px 0}.scan-review h3{font-size:22px;margin:0 0 15px}.scan-review p{font-size:14px;line-height:1.65}#scan-preview{display:block;width:100%;height:auto;max-height:360px;object-fit:contain;background:#f5f3ed;border-radius:10px}.reference-check h4{font-size:17px;margin:18px 0 6px}.reference-check .form-grid{gap:10px}.draft-pieces{list-style:none;padding:0;margin:18px 0;display:grid;gap:8px}.draft-pieces li{display:flex;align-items:center;gap:12px;padding:10px;background:#eff2e6;border-radius:10px;font-size:14px}.draft-pieces b{min-width:35px;min-height:35px;border-radius:8px;background:#fff;display:grid;place-items:center;font-size:19px}.scan-caution{padding:12px;border-left:3px solid #a32925;background:#fff4e7}.scan-review .primary{width:100%;gap:15px;font-size:15px;background:#c43a2b}.pool-summary{border-top:1px solid #2222;padding-top:20px;margin-top:24px}.pool-summary>p:not(.fine):not(.eyebrow){font-weight:700;line-height:1.6}#inventory-details,.inventory-alternatives{margin-top:18px}#inventory-details summary,.inventory-alternatives summary{cursor:pointer;font-size:14px;font-weight:700;min-height:44px;display:flex;align-items:center}.inventory-alternatives .row-actions{margin:10px 0}.inventory-row{grid-template-columns:1.3fr 1fr .7fr 44px}.inventory-row button{min-width:44px}.secondary,.text-button{min-height:44px}#lesson-form .fine{font-size:12px;line-height:1.6;color:#63655f}#photo-inventory .check-row{cursor:pointer;padding:10px 0;min-height:44px}#scan-summary:focus,#pool-summary:focus{outline:3px solid #3468aa;outline-offset:4px}
@media(max-width:480px){.capture-card{padding:16px}.capture-actions{flex-direction:column}.capture-action{width:100%}.reference-check .form-grid{grid-template-columns:1fr}.inventory-row{grid-template-columns:1fr 1fr}.inventory-row button{justify-self:end;width:44px}.scan-review{padding:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Shared lesson language: a clear reading area, a useful reference rail, room to create. */
.lesson-ready{grid-column:1/-1}.redesigned-card{padding:24px!important}.lesson-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px}.lesson-actions button{min-height:48px}
.packet.lesson-sheet{--lesson-tint:#fff0b0;max-width:1120px;padding:24px;margin:0 auto;background:#fffcf4;border:0;border-radius:24px;color:#22252c}
.lesson-sheet[data-subject=Science]{--lesson-tint:#e2eedb}.lesson-sheet[data-subject=Technology]{--lesson-tint:#dfeafb}.lesson-sheet[data-subject=Engineering]{--lesson-tint:#ffe1d8}
.packet .lesson-brand{display:flex;position:static;gap:12px;align-items:center;justify-content:flex-start;max-width:none;padding:0 0 24px;margin:0 0 24px;border:0;border-bottom:6px solid var(--lesson-tint);background:transparent;box-shadow:none}
.lesson-brand img{width:48px;height:48px;border-radius:12px}.lesson-brand strong{font-size:25px;letter-spacing:-1px;display:block}.lesson-brand small{display:block;font-size:9px;letter-spacing:1.1px;font-weight:800;margin-top:3px}.lesson-role{margin-left:auto;font-size:10px;letter-spacing:1px;font-weight:800;color:#b23328}
.lesson-grid{display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px;align-items:start}.lesson-rail{padding:20px;border-radius:20px;background:var(--lesson-tint);position:sticky;top:24px}.lesson-rail section{margin:18px 0}.packet .lesson-rail h3{font-size:14px;margin:0 0 7px}.packet .lesson-rail p{font-size:14px;line-height:1.5;margin:0;white-space:pre-line}.lesson-rail summary{font-weight:800;font-size:14px;min-height:44px;cursor:pointer}.lesson-rail nav{display:flex;flex-direction:column;gap:5px;border-top:1px solid #2222;padding-top:18px;margin-top:18px}.lesson-rail nav button{background:transparent;border:0;text-align:left;color:#22252c;border-radius:10px;padding:10px;font:inherit;font-size:13px;font-weight:700;cursor:pointer;min-height:44px}.lesson-rail nav button:hover{background:#ffffffbb}.lesson-rail a{display:inline-block;font-size:13px;font-weight:700;min-height:44px;padding-top:16px;overflow-wrap:anywhere;color:#a92e23}
.lesson-hero{background:var(--lesson-tint);border-radius:22px;padding:24px;margin-bottom:20px}.packet .lesson-hero h1{font-size:36px;line-height:1.08;letter-spacing:-1px;margin:12px 0 18px}.packet .lesson-hero .packet-meta{font-size:14px}.lesson-invitation{font-weight:700;margin-bottom:0!important}
.packet .lesson-step{padding:22px;background:white;border-radius:18px;border-left:5px solid var(--lesson-tint);margin:0 0 16px;scroll-margin-top:28px}.packet .lesson-step h2,.packet .lesson-reflection h2{font-size:23px;letter-spacing:-.5px;margin:0 0 12px}.packet .lesson-step p{font-size:17px;line-height:1.65;white-space:pre-line;margin:0}.packet .lesson-reflection{background:#fff0b080;border-radius:20px;padding:22px}.lesson-reflection .sketch-space{background:#fff;border:1px solid #bfbeb7;border-radius:12px}.packet footer{display:block;margin-top:20px;font-size:14px;line-height:1.5;color:#63655f;border:0;padding:12px 0}.teacher-tools{padding:22px;background:#fff;border-radius:16px;margin-top:22px}.teacher-tools summary{min-height:44px;font-weight:700;cursor:pointer}.student-display>.student-toolbar{position:sticky;top:0;z-index:2}
@media(max-width:820px){.lesson-grid{grid-template-columns:1fr;gap:18px}.lesson-rail{position:static;grid-row:1}.lesson-main{grid-row:2}.lesson-rail nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.packet.lesson-sheet{padding:16px}.packet .lesson-hero h1{font-size:30px}.lesson-role{display:none}.redesigned-card{padding:12px!important}.packet .lesson-step{padding:18px}.packet .lesson-step p{font-size:16px}}
@media print{.packet .lesson-brand{display:flex}.lesson-actions,.teacher-tools,.lesson-rail nav{display:none!important}.lesson-grid{display:grid;grid-template-columns:140px minmax(0,1fr);gap:18px}.lesson-rail{position:static;grid-row:auto;padding:12px}.lesson-main{grid-row:auto}.packet.lesson-sheet{padding:0}.packet .lesson-hero{padding:0;background:none}.packet .lesson-hero h1{font-size:25pt}.packet .lesson-step{padding:0;border:0}.packet .lesson-step p{font-size:11pt}.packet .lesson-step h2{font-size:13pt}.packet .lesson-rail p{font-size:9pt}.lesson-rail details{display:block}.lesson-rail details>*{display:block}.lesson-brand,.lesson-hero,.lesson-step{break-inside:avoid}}

/* Always visible alternatives and a short, explicit kit check. */
.inventory-alternatives{margin:28px 0 0;padding:24px 0 0;border-top:3px solid #292b34}.inventory-alternatives h3,.kit-method h3{font-size:30px;line-height:1.1;letter-spacing:-.8px;margin:10px 0 14px}.inventory-alternatives p,.kit-method p{line-height:1.6}.start-options{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px}.start-option{min-height:132px;position:relative;border:1px solid #b7bbb0;border-radius:16px;background:#fff;text-align:left;padding:20px;color:#22252c;cursor:pointer;font:inherit;display:flex;flex-direction:column;gap:9px}.start-option>span{font-size:30px;line-height:1}.start-option strong{font-size:17px;line-height:1.3}.start-option small{font-size:13px;line-height:1.5;font-weight:400}.start-option.kit-option{grid-column:1/-1;background:#ffdf59;border:2px solid #292b34;padding-right:48px;min-height:150px}.kit-option strong{font-size:22px}.kit-option b{position:absolute;right:20px;top:22px;font-size:28px}.start-option:hover{box-shadow:0 3px 0 #2222}.kit-method{padding:24px;margin-top:22px;border:2px solid #3f6b55;border-radius:18px;background:#f0f5e9;scroll-margin-top:24px}.kit-method[hidden]{display:none}.kit-method .kit-condition{padding:0;border:0;margin:22px 0 10px}.kit-condition legend{font-size:17px;padding:0}.kit-condition .check-row{background:#fff;border:1px solid #c3cdbb;padding:12px!important;border-radius:10px;margin-top:10px;align-items:center;min-height:48px}.kit-condition input{width:20px;flex:none}.essential-check{background:#fff;padding:14px!important;border:1px solid #3f6b55;border-radius:10px}.kit-method #kit-guidance{font-weight:700;font-size:14px}.part-card .use-kit{width:100%;margin-top:16px;background:#ffdf59;border-color:#292b34}.sample-lesson-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:28px 0}.sample-lesson{padding:26px;background:#fff;border:1px solid #c6cabf;border-radius:22px;border-top:8px solid var(--sample-color,#ffd43b)}.sample-lesson[data-subject=Science]{--sample-color:#7bb887}.sample-lesson[data-subject=Technology]{--sample-color:#729ee8}.sample-lesson[data-subject=Engineering]{--sample-color:#ed8b72}.sample-lesson h3{font-size:27px;letter-spacing:-.6px;margin:12px 0}.sample-lesson h4{font-size:14px;margin:22px 0 8px}.sample-lesson p{font-size:16px;line-height:1.6}.sample-lesson .sample-mission{font-size:20px;font-weight:650}.sample-lesson a{display:inline-block;min-height:44px;padding-top:12px;font-size:13px;font-weight:700;color:#943227}.sample-lesson details{margin-top:16px}.sample-lesson summary{min-height:44px;cursor:pointer;font-weight:700;display:flex;align-items:center}.sample-lesson ol{padding-left:22px;line-height:1.6}.sample-lesson li{padding:6px 0}.sample-brand{display:flex;align-items:center;gap:12px}.sample-brand img{width:40px;height:40px}.sample-brand p{margin:0;font-size:12px;font-weight:800;letter-spacing:1px}.sample-note{padding:12px;background:#fff0b0;border-radius:10px;font-weight:700}
@media(max-width:600px){.sample-lesson-grid{grid-template-columns:1fr}.kit-method{padding:16px}.kit-method .form-grid{grid-template-columns:1fr}.start-options{grid-template-columns:1fr}.start-option{min-height:110px}.inventory-alternatives h3{font-size:28px}}

.class-hero>div{min-width:0}.wonder-board{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:400px){.class-hero h1{font-size:40px}.subject-tile b{font-size:17px}.subject-tile{padding:10px}.wonder-board{padding-left:18px;padding-right:18px}}