.site-header{display:flex;justify-content:space-between;gap:20px;align-items:center}.site-header a{color:inherit;text-decoration:none}.intro{padding:25px 0 30px}.intro h1{font-size:clamp(2.3rem,5vw,3.7rem)}.intro>p:last-child{max-width:780px;line-height:1.7;color:#52636c}.experiment{display:grid;grid-template-columns:1.2fr 1fr;background:white;border:1px solid #dce5e5;border-radius:24px;overflow:hidden}.visual{padding:20px;background:#edf4f7}.visual svg{width:100%;height:auto;display:block}.controls{padding:32px}.controls h2{margin-top:10px}.controls p{line-height:1.6}.controls label{display:flex;justify-content:space-between;gap:12px;font-weight:bold;margin-top:26px}.controls output{color:#126b64;font-variant-numeric:tabular-nums}.controls input[type=range]{width:100%;accent-color:#126b64;margin:18px 0;height:24px}.volume{display:flex;flex-direction:column;gap:10px;background:#e5f3f0;border-radius:16px;padding:22px;margin-top:22px}.volume strong{font-size:2rem;font-variant-numeric:tabular-nums}.constraint{font-size:.95rem}.caption{font-size:.85rem;color:#52636c;line-height:1.5}.view-toggle{display:flex;align-items:center;gap:9px;cursor:pointer}.view-toggle input{accent-color:#126b64}button{padding:12px 16px;border:1px solid #a7c4be;border-radius:10px;background:white;color:#126b64;cursor:pointer;font:inherit}input:focus-visible,button:focus-visible,summary:focus-visible,a:focus-visible{outline:3px solid #d48c50;outline-offset:4px}.learning{max-width:850px;padding:45px 0 60px;line-height:1.8}.learning li{padding:6px 0}details{border:1px solid #dce5e5;border-radius:12px;background:white;padding:16px 20px;margin:14px 0}summary{cursor:pointer;font-weight:bold}@media(max-width:760px){.experiment{grid-template-columns:1fr}.controls{padding:24px}.site-header{font-size:.9rem}.visual{padding:10px}.volume strong{font-size:1.7rem}}