.air{--air-ink:#183e56;--air-muted:#496878;--air-line:#b9d8e4;--air-soft:#edf8fc;--air-accent:#087a9a;--air-warm:#e68a22;max-width:1120px;margin:auto;padding:28px 24px 50px;color:var(--air-ink);font:16px/1.55 Inter,Arial,sans-serif}.air *,.air ::after,.air ::before{box-sizing:border-box}.air section{padding:0}.air [hidden]{display:none!important}.air h1,.air h2,.air h3,.air p{margin:0;color:inherit}.air h1{font-size:clamp(2.1rem, 4vw, 3.2rem);line-height:1.1;letter-spacing:-.04em;margin:7px 0}.air h2{font-size:1.5rem;line-height:1.2}.air h3{font-size:1.12rem}.air button,.air input,.air select{font:inherit}.air button,.air select{min-height:44px;padding:9px 13px;border:1px solid var(--air-line);border-radius:8px;background:#fff;color:var(--air-ink)}.air button{cursor:pointer;font-weight:700}.air button:hover{border-color:var(--air-accent)}.air :is(button,select,input,a,summary):focus-visible{outline:3px solid var(--air-warm);outline-offset:3px}.air-experience-heading,.air-heading,.air-section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:22px}.air-heading a{display:inline-block;margin-bottom:14px;color:var(--air-muted);font-size:.86rem}.air-heading>div>p:last-child,.air-section-heading>div>p:last-child,.air-stage-intro{color:var(--air-muted)}.air-eyebrow{color:var(--air-accent)!important;font-size:.74rem;font-weight:800;letter-spacing:.1em}.air-actions{display:flex;align-items:end;gap:10px}.air-actions label{display:grid;gap:4px;font-size:.8rem;font-weight:700}.air-note,.air-reminder{margin-bottom:22px;padding:14px 17px;border-left:4px solid var(--air-accent);border-radius:0 8px 8px 0;background:var(--air-soft)}.air-tabs{display:flex;gap:5px;margin-bottom:20px;border-bottom:1px solid var(--air-line)}.air-tabs button{border:0;border-bottom:3px solid transparent;border-radius:7px 7px 0 0;background:0 0;color:var(--air-muted)}.air-tabs [aria-selected=true]{border-bottom-color:var(--air-accent);background:var(--air-soft);color:var(--air-accent)}.air-count{font-weight:800;color:var(--air-accent)}.air-observe-grid{display:grid;grid-template-columns:minmax(280px,0.95fr) minmax(290px,1.05fr);gap:22px;align-items:stretch}.air-question,.air-stage-figure,.air-stage-panel{margin:0;padding:18px;border:1px solid var(--air-line);border-radius:14px;background:#fff}.air-stage-figure{background:var(--air-soft)}.air-image-placeholder{display:flex;align-items:center;justify-content:center;min-height:260px;margin:0;padding:28px;border:1px solid var(--air-line);border-radius:14px;background:var(--air-soft);color:var(--air-muted);text-align:center;font-weight:700}.air-print-images img,.air-stage-figure img{display:block;width:100%;max-width:100%;height:auto;border-radius:9px}.air-stage-figure figcaption{margin-top:11px;color:var(--air-muted);font-size:.87rem}.air-stage-panel{display:flex;flex-direction:column;align-items:flex-start}.air-stage-panel fieldset{width:100%;min-width:0;margin:0 0 14px;padding:0;border:0}.air-question legend,.air-stage-panel legend{margin-bottom:10px;font-weight:800;font-size:1.05rem}.air-prediction-options{display:grid;gap:8px}.air-prediction-options label,.air-question label{display:flex;align-items:flex-start;gap:9px;padding:10px;border:1px solid var(--air-line);border-radius:8px;cursor:pointer}.air-prediction-options input,.air-question input{width:18px;height:18px;flex:none;margin-top:2px;accent-color:var(--air-accent)}.air-prediction-options label:has(input:checked),.air-question label:has(input:checked){border-color:var(--air-accent);background:var(--air-soft)}.air-primary{border-color:var(--air-accent)!important;background:var(--air-accent)!important;color:#fff!important}.air-prediction-feedback,.air-question-feedback{margin-top:11px;font-weight:700}.air-prediction-feedback[data-state],.air-question-feedback[data-state]{padding:10px 12px;border-radius:7px}.air-prediction-feedback[data-state=empty],.air-question-feedback[data-state=empty],.air-question-feedback[data-state=retry]{color:#704509;background:#fff2da}.air-prediction-feedback[data-state=observed],.air-question-feedback[data-state=correct]{color:#14533c;background:#e7f6ed}.air-reveal{width:100%;margin:14px 0;padding:14px;border-radius:8px;background:#e7f6ed;border-left:4px solid #21805d}.air-reveal h3{margin-bottom:5px}.air-stage-buttons{display:grid;grid-template-columns:1fr;gap:8px;width:100%;margin-top:auto}.air-stage-buttons [aria-pressed=true]{border-color:var(--air-accent);background:var(--air-accent);color:#fff}.air-reminder{margin-top:22px}.air-section-heading{margin-bottom:16px}.air-question{margin:16px 0}.air-question fieldset{display:grid;gap:9px;min-width:0;margin:0 0 15px;padding:0;border:0}.air-source,.air-teacher{margin-top:24px;padding-top:12px;border-top:1px solid var(--air-line);color:var(--air-muted);font-size:.9rem}.air-source summary,.air-teacher summary{padding:8px 0;color:var(--air-accent);font-weight:800;cursor:pointer}.air-source p,.air-teacher p{margin-top:9px}.air-source a{color:var(--air-accent)}.air-print{display:none}@media screen and (max-width:760px){.air{padding:20px 12px 35px}.air-experience-heading,.air-heading,.air-section-heading{align-items:flex-start;flex-direction:column}.air-observe-grid{grid-template-columns:1fr}.air-tabs button{flex:1;padding:10px 4px;font-size:.78rem}}@media print{@page{size:A4 portrait;margin:10mm}#main-content,.air,body,html{width:auto!important;max-width:none!important;margin:0!important;padding:0!important;color:#111!important;background:#fff!important}#main-content>:not(.air),.air>:not(.air-print),body>:not(main):not(script):not(style):not(link){display:none!important}.air .air-print{display:block!important;font:10pt/1.25 Arial,sans-serif}.air-print h1{margin:0 0 1mm;font-size:18pt}.air-print h2{margin:3mm 0 1.5mm;font-size:11pt}.air-print p{margin:1mm 0}.air-print-images{display:grid;grid-template-columns:repeat(3,1fr);gap:3mm;margin:2mm 0}.air-print-images figure{min-width:0;margin:0;break-inside:avoid}.air-print-images img{border:1px solid #777;border-radius:0}.air-print-images figcaption{margin-top:1mm;font-weight:700}.air-print-images p{font-size:10pt}.air-print-images .air-student{min-height:2.8em;padding-bottom:1.4em;border-bottom:1px solid #555}.air-print-question{break-inside:avoid}.air-drawing-space{height:40mm;border:1px solid #555;margin-top:2mm}.air-answer{display:none!important}.air[data-print-kind=answer] .air-answer{display:block!important}.air[data-print-kind=answer] .air-student{display:none!important}}