.water-lab{margin-top:16px;padding:clamp(20px,3vw,32px);border:1px solid #b7cbc5;border-radius:18px;background:linear-gradient(145deg,#fffdf8,#e7f3f4);box-shadow:0 12px 28px rgba(38,74,69,.12)}.water-lab h3{font:700 clamp(24px,3vw,32px)/1.15 'Fraunces',serif;margin:5px 0 8px}.water-lab-intro>p:not(.eyebrow){max-width:850px;color:#526862;line-height:1.6}.water-vocabulary{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin:18px 0}.water-vocabulary span{display:flex;flex-direction:column;padding:13px;border:1px solid #c7d9db;border-radius:11px;background:#fff;font-size:12px;color:#60736d}.water-vocabulary b{margin-bottom:4px;color:#236c7a;font-size:14px}.water-simulator,.cooling-simulator{display:grid;grid-template-columns:minmax(220px,.65fr) minmax(320px,1.35fr);gap:25px;align-items:center;padding:22px;border-radius:15px;background:#f8fcfc}.water-vessel{position:relative;width:190px;height:230px;margin:auto;border:7px solid #74949a;border-top:0;border-radius:5px 5px 30px 30px;background:rgba(255,255,255,.72);overflow:visible}.water-liquid{position:absolute;inset:auto 0 0;height:62%;border-radius:0 0 21px 21px;background:linear-gradient(rgba(89,187,218,.6),rgba(39,145,190,.78));transition:height .35s}.ice-pieces{position:absolute;z-index:2;left:25px;right:25px;bottom:50px;display:flex;gap:10px;transition:opacity .3s}.ice-pieces i{width:38px;height:34px;border:2px solid #8ac6d5;border-radius:8px;background:#dff7ff;transform:rotate(8deg)}.water-vessel.warming .ice-pieces,.water-vessel.boiling .ice-pieces{opacity:0}.water-vessel.frozen .water-liquid{height:72%;background:#d8f3fa}.water-vessel.melting .ice-pieces i{transform:scale(.72) rotate(8deg)}.bubble{position:absolute;display:none;width:15px;height:15px;border:2px solid #e7fbff;border-radius:50%;animation:water-rise 1.5s infinite}.b1{left:25%;bottom:10%}.b2{left:57%;bottom:4%;animation-delay:.45s}.b3{left:75%;bottom:25%;animation-delay:.8s}.boiling .bubble{display:block}.water-steam,.surface-particles{position:absolute;z-index:3;left:10px;right:10px;bottom:100%;height:85px}.water-steam i,.surface-particles i{position:absolute;bottom:0;width:14px;height:14px;border-radius:50%;border:2px solid #9ed4df;opacity:0}.warming .surface-particles i,.boiling .water-steam i{opacity:.8;animation:water-rise 2s infinite}.water-steam i:nth-child(2),.surface-particles i:nth-child(2){left:45%;animation-delay:.6s}.water-steam i:nth-child(3),.surface-particles i:nth-child(3){left:75%;animation-delay:1.1s}.heat-panel label,.cool-panel label{display:flex;justify-content:space-between;font-weight:800}.heat-panel input,.cool-panel input{width:100%;margin:10px 0 18px;accent-color:#e77742}.state-reading{display:flex;gap:13px;align-items:center;padding:15px;border-radius:12px;background:#fff}.state-reading>span{font-size:35px}.state-reading strong{font:700 20px 'Fraunces',serif;color:#236c7a}.state-reading p,.evidence-note p{margin:5px 0;line-height:1.5;color:#526862}.evidence-note{margin-top:10px;padding:14px;border-left:4px solid #e68a56;background:#fff8ef}.compare-change{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:15px}.compare-change>div{padding:18px;border-radius:13px;background:#fff}.compare-change b{font:700 20px 'Fraunces',serif;color:#236c7a}.compare-change span{display:block;margin:4px 0;color:#c55e2f;font-size:11px;font-weight:800;text-transform:uppercase}.compare-change p{color:#526862;line-height:1.5}@keyframes water-rise{from{transform:translateY(0) scale(.7);opacity:.8}to{transform:translateY(-75px) scale(1.2);opacity:0}}
.cold-cup{position:relative;width:180px;height:210px;margin:auto;border:7px solid #78969b;border-top:0;border-radius:5px 5px 28px 28px;background:rgba(255,255,255,.8)}.cup-liquid{position:absolute;inset:auto 0 0;height:70%;border-radius:0 0 20px 20px;background:#65b8d4}.cup-ice{position:absolute;z-index:2;left:18px;right:18px;bottom:38px;display:flex;gap:7px;opacity:0}.cup-ice i{width:38px;height:35px;border:2px solid #8ac6d5;border-radius:7px;background:#dff7ff}.outside-drops i{position:absolute;width:12px;height:17px;border-radius:60% 60% 65% 65%;background:#54acd0;opacity:0}.outside-drops i:nth-child(1){left:-21px;top:45px}.outside-drops i:nth-child(2){right:-20px;top:80px}.outside-drops i:nth-child(3){left:-18px;top:125px}.outside-drops i:nth-child(4){right:-22px;top:145px}.outside-drops i:nth-child(5){right:-18px;top:30px}.cold-cup.condensing .outside-drops i,.cold-cup.freezing .outside-drops i{opacity:1;animation:drop-slide 2s infinite alternate}.cold-cup.freezing .cup-liquid{background:#cceef5}.cold-cup.freezing .cup-ice{opacity:1}.particle-story{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:15px;padding:18px;border-radius:14px;background:#fff}.particle-story>div{display:flex;flex-direction:column;align-items:center;min-width:125px}.particle{display:grid;place-items:center;width:95px;height:70px;margin-bottom:6px;border:1px dashed #9dbbbf;border-radius:10px;color:#2183a0;font-weight:900;letter-spacing:7px}.particle-story i{color:#c55e2f;font-style:normal;font-weight:800}.particle-story small{color:#60736d}@keyframes drop-slide{to{transform:translateY(8px)}}
.state-path{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:center;gap:12px;margin:20px 0;padding:22px;border-radius:15px;background:#f8fcfc}.state-path>div{display:flex;flex-direction:column;align-items:center;padding:18px;border:2px solid #b9d0d3;border-radius:14px;background:#fff;transition:.2s}.state-path>div span{font-size:38px}.state-path>div b{color:#236c7a}.state-path>div.active{border-color:#318899;box-shadow:0 7px 15px rgba(35,108,122,.15)}.state-path p{display:flex;flex-direction:column;gap:7px;margin:0}.state-path button{padding:7px;border:0;border-radius:999px;background:#e5f1f2;color:#236c7a;font-size:10px;font-weight:800;cursor:pointer}.state-path button.active{background:#236c7a;color:#fff}.scenario-picker{display:flex;flex-wrap:wrap;gap:8px}.scenario-picker button{padding:10px 13px;border:1px solid #b9cac5;border-radius:10px;background:#fff;color:var(--ink);font-weight:700;cursor:pointer;box-shadow:0 4px 9px rgba(38,74,69,.08)}.scenario-picker button[aria-pressed=true]{background:#236c7a;color:#fff}.change-answer{display:flex;align-items:center;gap:18px;margin-top:14px;padding:20px;border-radius:14px;background:#173f48;color:#fff}.change-answer>span{font-size:38px}.change-answer .eyebrow{color:#f0b48e}.change-answer h4{font:700 24px 'Fraunces',serif;margin:4px 0}.change-answer p:last-child{margin:4px 0;color:#d8e9eb}.water-cycle-reminder{margin-top:12px;padding:16px;border-left:5px solid #e68a56;border-radius:8px;background:#fff7ec;line-height:1.55}
.dual-temperature{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 14px;padding:10px 13px;border-radius:10px;background:#173f48;color:#fff}.dual-temperature small{color:#c9dfe2}.dual-temperature output{font:700 20px monospace;color:#f0c38e}
@media(max-width:760px){.water-vocabulary{grid-template-columns:1fr 1fr}.water-simulator,.cooling-simulator{grid-template-columns:1fr}.state-path{grid-template-columns:1fr}.state-path p{flex-direction:row;justify-content:center}.compare-change{grid-template-columns:1fr}}@media(max-width:480px){.water-vocabulary{grid-template-columns:1fr}.scenario-picker{display:grid}.particle-story i{width:100%;text-align:center;transform:rotate(90deg)}.dual-temperature{align-items:flex-start;flex-direction:column}}