.gradient-lesson .water-heading h1{font-size:clamp(56px,7.6vw,116px)}.gradient-lesson .water-workbench{grid-template-columns:minmax(0,1fr) 320px}.gradient-lesson .water-heading__intro{padding-right:0}.gradient-stage{position:relative;flex:1;min-height:700px;aspect-ratio:1.3;overflow:hidden;background:#e9eae1}.gradient-stage canvas,.gradient-fallback{position:absolute;inset:0;width:100%;height:100%;display:block;object-fit:contain}.gradient-stage[data-ready=true] .gradient-fallback{display:none}.gradient-grab{position:absolute;width:52px;height:52px;margin:-26px 0 0 -26px;border:1px dashed rgba(255,255,245,.5);background:transparent;border-radius:50%;cursor:move;touch-action:none;opacity:0}.gradient-grab:before{content:'+';font:19px monospace;color:#fffbe8}.gradient-grab:hover,.gradient-grab:focus-visible{opacity:1}.gradient-grab:focus-visible{outline:2px solid #3151c8;outline-offset:5px}.gradient-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;border-bottom:1px solid var(--line);padding-bottom:10px;margin:18px 0}.gradient-tabs button{min-height:44px;font-size:12px;border:0;background:none;color:var(--muted)}.gradient-tabs button[aria-selected=true]{background:#e1e6de;color:var(--ink);border-radius:3px}.gradient-panel[hidden]{display:none}.gradient-field{display:block;font-size:12px;margin:18px 0}.gradient-field input,.gradient-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}.gradient-lesson .water-controls h3{font-size:28px;margin:22px 0}.gradient-lesson .water-range{margin:24px 0}.gradient-lesson .water-range>span{font-size:12px}.gradient-lesson .water-range small,.gradient-note{display:block;font:10px/1.8 monospace;color:var(--muted)}.gradient-note{margin-top:18px}.gradient-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}.gradient-download{font-size:12px}.gradient-download a{display:inline-block;padding:8px 0;text-decoration:underline}.gradient-type{display:flex;align-items:center;gap:10px;font-size:12px;min-height:44px}.gradient-type input{width:17px;height:17px;accent-color:var(--blue)}.gradient-lesson .water-story__intro{position:static}.gradient-lesson .water-chapter p{font-size:14px}.gradient-diagram{display:block;width:100%;height:auto;margin:25px 0;border:1px solid var(--line);background:#e8eae3}.gradient-lesson pre{white-space:pre-wrap;overflow-wrap:anywhere}.gradient-lesson button,.gradient-lesson select{cursor:pointer}.gradient-lesson button:focus-visible,.gradient-lesson input:focus-visible,.gradient-lesson select:focus-visible{outline:2px solid var(--blue);outline-offset:4px}.gradient-lesson .water-stages button[aria-pressed=true]{background:#dfe4dc;color:#202923}
@media(max-width:1000px){.gradient-lesson .water-workbench{grid-template-columns:minmax(0,1fr) 280px}.gradient-stage{min-height:680px}}@media(max-width:700px){.gradient-lesson .water-heading h1{font-size:clamp(44px,11vw,76px)}.gradient-lesson .water-workbench{display:block}.gradient-stage{min-height:0;aspect-ratio:1/1.3}.gradient-lesson .water-controls{display:block}.gradient-lesson .water-stages button{font-size:10px;padding:12px 3px}.gradient-lesson .water-stages button span{display:block}.gradient-lesson .water-story h2{font-size:clamp(40px,11vw,53px)}}