.adventure-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin:22px 0 35px}.adventure-card{display:flex;flex-direction:column;text-align:left;border:2px solid #9ebdbc;border-radius:26px;background:#dff2ec;padding:22px;box-shadow:0 6px 0 #99bdb0;transition:transform .15s}.adventure-card.violet{background:#ebe2ff;border-color:#b8a4d5;box-shadow:0 6px 0 #b8a4d5}.adventure-card.amber{background:#fff0bb;border-color:#d7be7c;box-shadow:0 6px 0 #d7be7c}.adventure-card.blue{background:#e1efff;border-color:#9eb9d2;box-shadow:0 6px 0 #9eb9d2}.adventure-card:hover{transform:translateY(-3px)}.adventure-card:active{transform:translateY(4px)}.adventure-top{display:flex;justify-content:space-between;gap:10px;font-size:.875rem;font-weight:700}.activity-symbol{font-size:2.5rem;font-weight:900;line-height:1.3;margin:20px 0 15px;letter-spacing:6px}.adventure-card h3{font-size:1.55rem;line-height:1.3;margin-bottom:8px}.adventure-card p{font-size:1rem;line-height:1.5;margin-bottom:22px}.adventure-cta{display:flex;justify-content:space-between;gap:8px;border-top:1px solid #37544b33;padding-top:15px;font-weight:800;margin-top:auto}.lab-guide{display:flex;align-items:center;gap:18px;margin-bottom:22px}.lab-guide img{object-fit:contain;width:90px;height:100px;flex-shrink:0}.lab-guide h3{font-size:1.4rem;line-height:1.4}.lab-guide p{font-size:1rem;margin-top:7px;line-height:1.5}.adventure-body p{font-size:1rem}.memory-board{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px}.memory-tile{position:relative;min-height:92px;border:2px solid #a48abe;border-radius:18px;box-shadow:0 4px 0 #9476af;background:#d9c6ec;font-size:2.5rem;color:#462767;font-weight:900}.memory-tile.revealed{background:#fff8db;color:#704919;border-color:#d7b876;box-shadow:0 4px 0 #c5a461}.memory-tile.matched{background:#e2f1da;color:#406632;border-color:#96b67c;box-shadow:none}.memory-tile small{font-size:1rem;position:absolute;right:7px;top:4px}.activity-message{min-height:3em;line-height:1.5;margin:20px 0 10px}.adventure-body .btn{margin-bottom:6px}.adventure-body .setup-actions{gap:16px}.new-section{margin-top:38px}.new-section h2{font-size:1.9rem}.new-section>p{margin-top:8px}.new-section .eyebrow{margin-bottom:7px}@media(max-width:850px){.adventure-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:620px){.adventure-grid{grid-template-columns:1fr;gap:20px}.adventure-card{padding:20px}.adventure-card h3{font-size:1.4rem}.activity-symbol{margin:12px 0;font-size:2.2rem}.lab-guide{gap:10px}.lab-guide img{width:66px;height:80px}.lab-guide h3{font-size:1.2rem}.memory-board{gap:10px}.memory-tile{min-height:66px;font-size:1.9rem;border-radius:14px}.new-section h2{font-size:1.6rem}.adventure-body{padding:20px 16px 26px}}
.header{gap:16px}.nav-link{padding:12px 15px}.lab-banner{display:flex;align-items:center;gap:22px;background:#dff0ee;border:2px solid #9abdb7;border-radius:28px;padding:18px 24px;margin-top:30px;box-shadow:0 6px 0 #9abdb7}.lab-banner img{width:115px;height:115px;object-fit:contain}.lab-banner>span{flex:1}.lab-banner strong{display:block;font-size:1.6rem;line-height:1.3;margin:8px 0}.lab-banner .eyebrow{font-size:.875rem;line-height:1.4}.lab-banner b{font-size:2rem}.lab-intro{display:flex;align-items:center;gap:24px}.lab-intro>div{flex:1}.lab-intro>img{width:150px;height:150px;object-fit:contain}.lab-intro p{margin-top:12px}.hop-equation{text-align:center;font-size:2.5rem;font-weight:900;margin:12px 0 24px}.number-track{display:flex;flex-wrap:wrap;justify-content:center;gap:7px;margin:15px 0 25px}.number-track>span{display:flex;align-items:center;justify-content:center;flex-direction:column;min-width:38px;min-height:60px;padding:5px;background:#edf2e6;border:1px solid #c7d7bb;border-radius:11px;font-weight:800;font-size:1.1rem}.number-track .start{border:3px solid #996938;background:#ffe8bb}.number-track .landed{border:3px solid #548047;background:#d6edcc}.number-track small{font-size:.75rem;font-weight:700}.word-picture{font-size:5.5rem;text-align:center;line-height:1.3;padding-bottom:20px}.lab-controls{border:0;padding:0;margin:20px 0;display:flex;flex-wrap:wrap;gap:12px}.lab-controls legend{font-weight:800;font-size:1rem;margin-bottom:12px}.stepper{display:flex;align-items:center;gap:22px}.stepper .btn{min-width:60px;font-size:1.5rem;margin-bottom:0}.stepper output{min-width:30px;font-size:1.6rem;font-weight:900;text-align:center}.adventure-body button:disabled{cursor:default}.adventure-body .btn:disabled{opacity:.5;box-shadow:none;transform:none}.water-diagram{position:relative;height:210px;border:2px solid #b1c7d1;border-radius:22px;background:#f4faff;overflow:hidden}.water-level{position:absolute;top:72px;left:0;right:0;bottom:0;background:#b9e2f1;border-top:3px solid #6096b8}.boat-model{position:absolute;left:50%;top:47px;width:140px;height:50px;border:6px solid #a6652e;border-top:0;border-radius:0 0 22px 22px;background:#f4c679;transform:translateX(-50%);display:flex;align-items:flex-start;justify-content:center;padding:5px;transition:top .5s}.boat-model.wide{width:240px}.boat-model.sunk{top:142px}.boat-model b{font-size:18px;color:#40586b;margin:0 3px}.water-label{position:absolute;left:15px;bottom:12px;font-size:.875rem;color:#34556b;font-weight:800}.model-note{font-size:.875rem!important;color:#52645f;margin:20px 0;line-height:1.6}.trial-log{padding:16px 20px;border-radius:18px;background:#edf3e6;margin:18px 0}.trial-log h4{margin:0 0 9px}.trial-log ul{margin:0;padding-left:20px;line-height:1.7}.home-experiment{margin-top:26px;padding:18px;border:2px dashed #b6c6ad;border-radius:18px;background:#f0f5e9}.home-experiment summary{font-size:1rem;line-height:1.5;font-weight:800;cursor:pointer;min-height:44px;display:list-item}.home-experiment h4{margin:16px 0 8px}.home-experiment li{padding:5px 0;line-height:1.6}.home-experiment ol{padding-left:22px}.home-experiment a{display:inline-block;text-decoration:underline;text-underline-offset:3px;margin-top:18px;font-size:.875rem;line-height:1.6}.light-screen{display:grid;place-items:center;height:180px;background:#202c3e;border-radius:22px;border:3px solid #6e8392}.light-screen>div{width:128px;height:128px;border-radius:50%;background:var(--light);border:1px solid #b4bac155;box-shadow:0 0 30px 3px color-mix(in srgb,var(--light),transparent 60%)}.light-result{text-align:center;font-size:1.6rem!important;font-weight:900;margin:12px 0 18px}.light-switches{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.light-switch{padding:12px 7px;display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:center}.light-switch small{font-size:.875rem}.light-dot{width:23px;height:23px;border-radius:50%;border:2px solid #ffffffb0}.colour-collection{display:flex;flex-wrap:wrap;gap:9px}.colour-collection>span{border:1px dashed #9faeac;border-radius:12px;padding:9px 12px;font-size:.875rem}.colour-collection .found{background:#ddecce;border:1px solid #9dbb80;font-weight:800}.shadow-diagram{display:block;width:100%;height:auto;margin:16px 0 22px}.position-controls{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.position-controls button{font-size:1rem;line-height:1.4;padding:12px 9px}.adventure-body h4{font-size:1rem}.lab-controls .filter{font-size:1rem}.new-section:first-of-type{margin-top:18px}.new-section .eyebrow{font-size:.875rem}.adventure-body .btn:focus-visible{outline-offset:6px}@media(max-width:1050px){.header{gap:12px}.header .parent-link{display:none}.nav-link{padding:11px 12px}}@media(max-width:620px){.header nav{gap:2px}.header .nav-link{padding:10px 6px;font-size:.875rem}.lab-banner{padding:16px;gap:12px}.lab-banner img{width:75px;height:100px}.lab-banner strong{font-size:1.2rem}.lab-banner b{display:none}.lab-banner .eyebrow{font-size:.75rem;letter-spacing:1px}.lab-banner span span:last-child{font-size:1rem;line-height:1.5}.lab-intro{gap:8px}.lab-intro>img{width:88px;height:115px}.lab-intro h1{font-size:1.8rem}.lab-intro .eyebrow{font-size:.75rem;line-height:1.5;letter-spacing:1px}.lab-intro p{font-size:1rem}.number-track{gap:6px}.number-track>span{min-width:34px;min-height:56px}.hop-equation{font-size:2rem}.position-controls{grid-template-columns:1fr;gap:12px}.position-controls button{min-height:48px}.boat-model.wide{width:210px}.home-experiment{padding:15px}.lab-guide p{font-size:1rem}.light-switches{gap:10px}.light-switch{font-size:1rem}.memory-tile:focus-visible{outline-offset:3px}}

.boat-model.pending{top:12px}
.dialog-head{position:sticky;top:0;z-index:5}.adventure-body [tabindex="-1"]{scroll-margin-top:95px}