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/* Reading layout trial: Z chapter 2 only. */
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/* Clearer accents with quiet reading surfaces, Z2 trial. */
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/* Focused student layout: compact header and three clear entry points. */
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.animated-scene{position:relative;width:100%;overflow:hidden;border-radius:24px;background:#e3f4ef}.animated-scene>svg{display:block;width:100%;height:auto}.scene-controls{display:flex;justify-content:flex-end;padding:8px 14px;background:#e3f4ef}.scene-pause{font:600 12px/1.4 system-ui;color:#174b50;background:#fff;border:1px solid #286d73;border-radius:20px;padding:7px 13px;cursor:pointer}.scene-pause:focus-visible{outline:3px solid #174b50;outline-offset:3px}.scene-balance{transform-origin:493px 242px;animation:scene-balance 9s ease-in-out infinite}.scene-telescope{transform-origin:222px 278px;animation:scene-look 12s ease-in-out infinite}.scene-continents{animation:scene-globe 25s linear infinite}.scene-cube{animation:scene-rise 9s ease-in-out infinite}.scene-spinner{transform-origin:0 0;animation:fair-turn 36s linear infinite}.scene-slice{animation:scene-slice 10s ease-in-out infinite}.scenes-paused .animated-scene *{animation-play-state:paused!important}@keyframes scene-balance{0%,100%{transform:rotate(-4deg)}50%{transform:rotate(4deg)}}@keyframes scene-look{0%,100%{transform:rotate(-2deg)}50%{transform:rotate(2deg)}}@keyframes scene-globe{from{transform:translateX(0)}to{transform:translateX(-300px)}}@keyframes scene-rise{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes scene-slice{0%,30%,100%{transform:translate(0,0)}60%,75%{transform:translate(10px,-12px)}}
/* Keep motion within the illustration and controls reachable. */
body.site-explore #chapter-art{pointer-events:auto;z-index:1}body.site-explore #chapter-art:after{pointer-events:none;display:none}body.site-explore #chapter-art .animated-scene,body.site-explore #chapter-art .fairground{max-height:100%;display:flex;flex-direction:column}body.site-explore #chapter-art svg{min-height:0;flex:1;width:100%;object-fit:contain}body.site-explore #chapter-art .scene-controls{flex-shrink:0}.book-intro .animated-scene{max-width:400px}.np-panel .animated-scene{margin-bottom:18px}.np-panel .scene-controls{padding:5px 10px}.animated-scene .fairground{border-radius:0}@media(prefers-reduced-motion:reduce){.animated-scene *{animation:none!important}}

/* Prominent chapter vocabulary PDFs: label and underline convey the action. */
.site-explore a.chapter-concept-link{display:block;margin:12px 0 28px;padding:22px 24px;border:2px solid #0e5360;border-left-width:8px;border-radius:13px;background:#fff0bc;color:#103d48;font:700 clamp(20px,2.3vw,28px)/1.5 Arial,Helvetica,sans-serif;letter-spacing:.025em;text-decoration:underline;text-underline-offset:5px;overflow-wrap:anywhere;box-shadow:0 4px 0 #0e536012}
.site-explore a.chapter-concept-link span{display:block;margin-top:9px;color:#294b55;font:400 16px/1.7 Arial,Helvetica,sans-serif;letter-spacing:normal}
.site-explore a.chapter-concept-link:hover{background:#ffe49a}
.site-explore a.chapter-concept-link:focus-visible{outline:3px solid #103d48;outline-offset:5px;box-shadow:0 0 0 8px #fff}
@media(max-width:500px){.site-explore a.chapter-concept-link{padding:18px 16px;font-size:20px}}