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#activities{background:#eef3fb;border-radius:24px;padding:clamp(24px,5vw,60px);margin-block:3rem}#activities .concepts{align-items:stretch;gap:24px}.activity-card{background:white;border:0!important;border-radius:20px!important;overflow:hidden;padding:0 0 24px!important;box-shadow:0 8px 24px #26345a12;position:relative}.activity-card img{width:100%;height:220px;object-fit:cover;display:block}.activity-card h3,.activity-card p{margin:20px 24px;line-height:1.6}.activity-card h3{font-size:1.4rem}.activity-number{display:inline-flex;align-items:center;justify-content:center;background:#f6d681;color:#302b46;border:4px solid white;border-radius:50%;width:52px;height:52px;margin:-28px 0 0 24px;position:relative;font-size:1rem;font-weight:700}.drawing-space{margin:24px;border:2px dashed #c0ccdf;border-radius:12px;min-height:90px;background:#fafcff}#activities>button{margin-top:24px;padding:14px 24px;background:#302b46;color:white;border:0;border-radius:12px;font-size:1rem;cursor:pointer}@media print{#activities{background:white;padding:0}.activity-card{break-inside:avoid;box-shadow:none;border:1px solid #ccc!important;margin-bottom:20px}.activity-card img{height:140px}.drawing-space{min-height:160px}}

#explore .concept{background:#fff;border:1px solid #d9dfeb;border-radius:18px;overflow:hidden;padding:0;box-shadow:0 6px 22px #26345a0c}#explore summary{padding:0 0 22px;display:flex;flex-direction:column;gap:12px;cursor:pointer}#explore .concept-art{width:100%;height:190px;object-fit:cover;display:block}#explore summary>span,#explore summary>strong{margin-inline:22px}#explore summary strong{font-size:1.3rem;line-height:1.4}#explore .concept-hint{color:#514478;font-weight:700;background:#f3effa;border-radius:8px;padding:8px 12px;align-self:flex-start;font-size:.95rem}#explore .concept>p{padding:0 22px 24px;line-height:1.75}#explore details[open]{border-color:#8b7dab}#explore summary:focus-visible{outline:3px solid #6552a0;outline-offset:-3px}

.science-guide{background:#f1f5fc;border-radius:24px;padding:clamp(24px,5vw,60px)}.guide-note{padding:20px;border-left:4px solid #8c78ad;background:white;line-height:1.7}.stage-nav{display:flex;gap:12px;margin:24px 0}.stage-button{width:64px;height:64px;border-radius:50%;border:2px solid #c5cce0;background:white;color:#342a52;font-size:1.4rem;cursor:pointer}.stage-button[aria-pressed=true]{background:#342a52;color:white}.stage-panel{display:flex;gap:24px;background:white;border-radius:20px;padding:28px}.stage-panel[hidden]{display:none}.stage-big{font-size:3.5rem;color:#a88b46}.stage-panel p{line-height:1.8}.brain-grid,.glossary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:24px 0}.brain-grid article,.glossary-grid article{padding:24px;background:white;border-radius:18px}.glossary-grid{grid-template-columns:repeat(4,1fr)}.science-diagram{width:100%;height:110px;color:#625080;background:#f4effb;border-radius:12px}.science-guide h3{font-size:1.5rem;margin-top:40px}.science-guide h4{font-size:1.15rem;margin:20px 0 12px}.science-guide article p{font-size:1rem;line-height:1.7}@media(max-width:850px){.brain-grid,.glossary-grid{grid-template-columns:repeat(2,1fr)}header nav{flex-wrap:wrap;gap:12px}}@media(max-width:520px){.brain-grid,.glossary-grid{grid-template-columns:1fr}.stage-panel{flex-direction:column}.stage-big{font-size:2rem}}@media print{#development{display:none!important}}

/* Editorial universe: warm paper, indigo, restrained gold. */
body{background:#fbf8f1}header{max-width:1280px;flex-wrap:wrap;gap:1rem;padding:1.5rem 2rem}header nav{order:3;width:100%;justify-content:center;flex-wrap:wrap;padding-top:1rem;border-top:1px solid #e8dfd3;gap:1.1rem 2rem}.languages{margin-left:auto}.intro{padding-top:2rem;padding-bottom:1.2rem}.eyebrow{letter-spacing:.14em;text-transform:uppercase;font-size:.76rem}h1{font-size:clamp(2.5rem,5vw,4.5rem);max-width:850px}.book{border-radius:16px;box-shadow:0 18px 55px #2f294912}.section{padding-top:4.5rem;padding-bottom:4.5rem}.character-grid article{background:#fffdf8;border:1px solid #e8dfd3;border-radius:24px;padding:1.5rem}.character-grid img{aspect-ratio:1;height:auto;object-fit:contain;background:#f6f0e9;padding:.5rem;border-radius:16px}.character-grid h3{font:2rem Georgia,serif;margin:.8rem 0}.character-grid p{color:var(--muted)}#activities{background:#eeeaf4}.activity-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:2rem}.activity-card{padding:0!important;border-radius:20px!important}.activity-card summary{list-style:none;cursor:pointer}.activity-card summary::-webkit-details-marker{display:none}.activity-card summary:after{content:'＋';display:block;text-align:right;padding:0 24px 20px;color:#6d557f;font-size:1.6rem}.activity-card[open] summary:after{content:'−'}.activity-card img{height:auto;aspect-ratio:3/2;object-fit:contain;background:#f7f3ee}.activity-card h3{font:1.7rem Georgia,serif;margin-top:12px}.activity-meta{color:#756586;font-size:.85rem}.activity-sheet{padding:0 24px 24px}.activity-sheet p{margin:0 0 1rem}.activity-sheet li{margin-bottom:.8rem}.activity-question{padding:16px!important;background:#f4eef9;border-radius:12px;font-family:Georgia,serif}.drawing-space{margin:16px 0 0;min-height:140px}.brain-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.brain-grid article{border:1px solid #e1e5ef;padding:30px}.process-number{display:inline-block;font:2.5rem Georgia,serif;color:#a491bf}.science-guide{background:#edf2f7}.science-guide h3{font-family:Georgia,serif;font-weight:400;font-size:1.9rem}.science-gallery{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:3rem}.science-gallery>div{grid-column:1/-1}.science-gallery figure{margin:0;background:#fff;border-radius:20px;overflow:hidden;border:1px solid #d9e0ea}.science-gallery img{display:block;width:100%;height:340px;object-fit:contain;background:#080a0c}.science-gallery figcaption{padding:24px;font-size:.9rem}.science-gallery figcaption p{margin-top:0}.after-birth{padding:24px 30px;background:#fffdf8;border-left:4px solid #b89147;margin-top:2rem;border-radius:0 16px 16px 0}.after-birth h3{margin-top:0}.glossary-grid article{border:1px solid #e1e5ef}#explore .concept-art{object-fit:contain;background:#f7f3ee}.download-row button{border:1px solid #c5bacd;border-radius:30px;padding:.65rem 1.2rem;background:#fffdf8}.section-heading{max-width:760px}.logos img{background:transparent}@media(max-width:700px){header{padding:1rem}.intro{padding-top:1rem}header nav{justify-content:flex-start;gap:.75rem 1.1rem}.section{padding-block:3rem}.activity-grid,.brain-grid,.science-gallery{grid-template-columns:1fr}.science-gallery img{height:290px}.character-grid{gap:1rem}.activity-sheet{padding-inline:20px}}@media print{.intro{display:none}details.activity-card>summary{display:block}.activity-card{border:1px solid #aaa!important}.activity-grid{display:block}.activity-sheet{display:block!important}#activities{margin:0}.activity-card summary:after{display:none}}

.logos{flex-wrap:wrap;gap:2rem}.logos img{width:20%;max-width:200px;max-height:72px}@media(max-width:700px){.logos{gap:1.5rem}.logos img{width:40%;max-height:65px}}

/* Authors and brain explorer */
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.concept figure{margin:1.5rem 0;padding:1rem;background:#fffdf8;border-radius:18px}.concept figure img{display:block;width:100%;height:auto;max-height:430px;object-fit:contain}.concept figcaption{margin:1rem 0;font-size:.95rem}.concept-art{background:#fffdf8!important;object-fit:contain!important}.brain-map{overflow:hidden;border-radius:20px;background:#fffaf7}.brain-region{stroke:none!important;filter:none!important;opacity:.8}.brain-region.is-selected{opacity:1;filter:drop-shadow(0 0 4px #55415c77)!important}.brain-region:focus-visible .anatomical-shape{stroke:#332749;stroke-width:4}.anatomical-fold{pointer-events:none;stroke-width:1.5!important;opacity:.8}.anatomical-shape{fill:inherit}.brain-map svg text{font:bold 14px sans-serif;fill:#28212d;paint-order:stroke;stroke:white;stroke-width:4;stroke-linejoin:round;pointer-events:none;text-anchor:middle}.brain-map svg{min-height:270px}.brain-tools{display:flex;flex-wrap:wrap;gap:.8rem;align-items:center;margin:1.5rem 0}.brain-tools label{display:flex;align-items:center;gap:.4rem}.brain-tools input[type=range]{max-width:170px}.brain-tools button,#brain-tour,.brain-quiz button{border:1px solid #8b789b;padding:.65rem 1rem;border-radius:15px;background:#fffdf8;color:#332749;cursor:pointer}.brain-tools button:focus-visible,#brain-tour:focus-visible,.brain-quiz button:focus-visible{outline:3px solid #cf9b48;outline-offset:3px}#region-details{padding:1rem 0}#region-details summary{cursor:pointer;font-weight:600}#region-more{line-height:1.7}.brain-quiz{padding:1.5rem;margin:1.5rem 0;background:#fffdf8;border-radius:22px}#quiz-options{display:flex;flex-wrap:wrap;gap:.65rem}.brain-quiz button:disabled{opacity:.6;cursor:default}#quiz-feedback{min-height:1.6rem}.stage-gallery{display:grid;grid-template-columns:1fr;gap:1rem}.stage-gallery figure{margin:1rem 0 0;padding:1rem;border-radius:18px;background:#fffdf8}.stage-gallery img{width:100%;height:auto;max-height:350px;object-fit:contain;background:#111}.stage-gallery figcaption{margin-top:.8rem;font-size:.9rem}.stage-gallery a{display:inline-block;margin:.3rem .4rem .3rem 0}.stage-panel{flex-wrap:wrap}.stage-gallery{grid-column:1/-1;flex-basis:100%;width:100%}@media(max-width:700px){.brain-map svg text{font-size:16px}.brain-tools{gap:.6rem}.concept figure{padding:.6rem}}