.cloud-lesson .water-heading h1{font-size:clamp(55px,7.5vw,112px)}
.cloud-stage{position:relative;min-height:590px;flex:1;aspect-ratio:1.3;overflow:hidden;background:#3263cc}
.cloud-stage canvas,.cloud-fallback{position:absolute;inset:0;width:100%;height:100%;display:block;object-fit:cover}.cloud-stage canvas[hidden]{display:none}.cloud-stage[data-ready=true] .cloud-fallback{display:none}#cloud-overlay{pointer-events:none}
.cloud-lesson .water-visual{background:#3263cc}.cloud-lesson .water-stages{border-color:#ffffff30}.cloud-lesson .water-stages button{color:#eef2ff}.cloud-lesson .water-stages button[aria-pressed=true]{background:#f3f0dd;color:#18376b}
.cloud-lesson .water-controls h3{font-size:28px;margin:20px 0}.cloud-lesson .water-range{margin:22px 0}.cloud-lesson .water-range>span{font-size:13px}.cloud-lesson .water-range small{font-size:11px;line-height:1.5}
.cloud-stats{grid-column:1/-1;display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:16px 0;gap:16px;margin:0;font:10px/1.7 monospace}.cloud-stats dt{color:var(--muted)}.cloud-stats dd{margin:0;color:var(--blue)}
.cloud-check{display:flex;align-items:center;gap:9px;min-height:36px;font-size:12px;grid-column:1/-1}.cloud-check input{accent-color:var(--blue);width:16px;height:16px}.cloud-check:has(input:disabled){opacity:.45}
.cloud-export{grid-column:1/-1;background:none;border:0;border-top:1px solid var(--line);padding:13px 0;display:flex;justify-content:space-between;width:100%;min-height:44px;color:var(--blue);font-size:12px}.cloud-download{grid-column:1/-1;font-size:12px}.cloud-download a{text-decoration:underline;display:inline-block;padding:8px 0}
.cloud-lesson .water-status{font-size:10px}.cloud-lesson .water-story__intro{position:static}.cloud-lesson .water-number{font-size:10px}.cloud-lesson .water-note{font-size:12px}.cloud-lesson .water-story__intro a{text-decoration:underline}.cloud-lesson .water-observation{grid-template-columns:140px 1fr minmax(190px,27%);gap:22px}.cloud-lesson .water-observation>span{font-size:10px}.cloud-lesson .water-observation p{font-size:13px}.cloud-lesson .water-observation code{overflow-wrap:anywhere}
.cloud-diagram{margin:24px 0;border:1px solid #cdd4dc;background:#e7ebf0;border-radius:2px}.cloud-diagram svg{display:block;width:100%;height:auto}.cloud-diagram figcaption{padding:12px 15px;font:10px/1.6 monospace;color:#526579;border-top:1px solid #cdd4dc}
.cloud-lesson button,.cloud-lesson summary{cursor:pointer}.cloud-lesson input:focus-visible{outline:2px solid var(--blue);outline-offset:4px}
@media(max-width:1100px){.cloud-stage{min-height:560px}.cloud-lesson .water-observation{grid-template-columns:140px 1fr}.cloud-lesson .water-observation code{grid-column:2}}
@media(max-width:700px){.cloud-lesson .water-heading h1{font-size:clamp(48px,12vw,80px)}.cloud-stage{min-height:0;aspect-ratio:4/5}.cloud-lesson .water-controls h3{grid-column:1/-1}.cloud-lesson .water-range{min-width:0;margin:17px 0}.cloud-lesson .water-range>span{font-size:12px;flex-wrap:wrap;gap:5px}.cloud-lesson .water-range small{font-size:10px}.cloud-lesson .water-controls{gap:0 18px}.cloud-lesson .water-observation{display:block}.cloud-lesson .water-story h2{font-size:clamp(40px,11vw,53px)}.cloud-lesson .water-stages button{font-size:11px}.cloud-lesson .water-stages button span{font-size:9px}}