.space-lesson .water-heading h1{font-size:clamp(56px,7.1vw,108px)}.space-lesson .water-heading__intro{padding-right:0}.space-lesson .water-workbench{grid-template-columns:minmax(0,1fr) 310px}.space-stage{position:relative;flex:1;min-height:640px;aspect-ratio:1.35;overflow:hidden;background:#b6c8e6}.space-stage canvas,.space-fallback{position:absolute;inset:0;width:100%;height:100%;display:block;object-fit:cover}.space-stage[data-ready=true] .space-fallback{display:none}.space-grab{position:absolute;width:64px;height:64px;margin:-32px 0 0 -32px;border:0;background:transparent;border-radius:50%;cursor:move;touch-action:none}.space-grab[data-dragging=true]{cursor:grabbing}.space-grab:focus-visible{outline:2px dashed #dfe8ff;outline-offset:8px}.space-hud{position:absolute;left:24px;right:24px;top:22px;display:flex;justify-content:space-between;pointer-events:none;font:8px monospace;letter-spacing:.1em;color:#243c66}.space-foot{position:absolute;bottom:23px;left:20px;right:20px;text-align:center;font:8px/1.8 monospace;letter-spacing:.08em;color:#243c66;pointer-events:none}.space-lesson .water-controls h3{font-size:28px;margin:22px 0}.space-lesson .water-range{margin:23px 0}.space-lesson .water-range>span{font-size:12px}.space-lesson .water-range small{display:block;font-size:10px;line-height:1.7}.space-field{display:block;font-size:12px;margin:18px 0}.space-field select{display:block;width:100%;min-height:44px;padding:9px;margin-top:9px;background:transparent;border:1px solid var(--line);color:var(--ink);font:inherit}.space-action{display:flex;align-items:center;justify-content:space-between;min-height:44px;border:0;border-top:1px solid var(--line);background:none;width:100%;padding:12px 0;color:var(--blue);font-size:12px}.space-download{font-size:12px}.space-download a{display:inline-block;padding:8px 0;text-decoration:underline}.space-lesson .water-story__intro{position:static}.space-lesson .water-chapter p{font-size:14px}.space-diagram{display:block;width:100%;height:auto;margin:25px 0;border:1px solid var(--line);background:#e8eae3}.space-lesson pre{white-space:pre-wrap;overflow-wrap:anywhere}.space-lesson button,.space-lesson select{cursor:pointer}.space-lesson button:focus-visible,.space-lesson input:focus-visible,.space-lesson select:focus-visible{outline:2px solid var(--blue);outline-offset:4px}.space-lesson .water-stages button[aria-pressed=true]{background:#dfe4dc;color:#202923}
@media(max-width:1000px){.space-lesson .water-workbench{grid-template-columns:minmax(0,1fr) 280px}.space-stage{min-height:600px}}@media(max-width:700px){.space-lesson .water-heading h1{font-size:clamp(44px,11vw,76px)}.space-lesson .water-workbench{display:block}.space-stage{min-height:0;aspect-ratio:1/1.12}.space-lesson .water-controls{display:block}.space-hud{left:16px;right:16px;font-size:7px}.space-foot{font-size:7px;bottom:14px}.space-lesson .water-stages button span{display:block}.space-lesson .water-story h2{font-size:clamp(40px,11vw,53px)}}

.space-panel[hidden]{display:none}.space-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;border-bottom:1px solid var(--line);padding-bottom:10px;margin:22px 0}.space-tabs button{min-height:44px;font-size:12px;border:0;background:none;color:var(--muted)}.space-tabs button[aria-selected=true]{background:#e1e6de;color:var(--ink);border-radius:3px}

.space-field input{display:block;width:100%;min-height:44px;padding:9px;margin-top:9px;background:transparent;border:1px solid var(--line);color:var(--ink);font:inherit}.space-lettering{display:flex;gap:10px;align-items:center;min-height:44px;font-size:12px}.space-lettering input{width:17px;height:17px;accent-color:var(--blue)}.space-grab:before{content:"+";font:20px monospace;color:#fff;opacity:0}.space-grab:hover:before,.space-grab:focus-visible:before{opacity:.8}

.space-stage[data-palette=night] .space-hud,.space-stage[data-palette=night] .space-foot{color:#c4d4f4}