.lab-heading{display:grid;grid-template-columns:1.2fr 1fr;gap:7vw;align-items:center;margin:45px 0 60px}.lab-heading h1{font-size:clamp(42px,6vw,76px);margin:15px 0}.lab-heading .muted{max-width:540px}.lab-card{padding:34px;border:1px solid #46605d;border-radius:20px;background:linear-gradient(140deg,#203b3c,#14262a)}.lab-card .primary{width:100%;margin-top:18px}.recall-toggle{display:flex;align-items:center;gap:10px;font-size:16px}.collection-heading{display:flex;justify-content:space-between;align-items:center;margin:0 0 20px}.collection-heading h2{margin:8px 0}.topic{border:1px solid #344a4b;border-radius:14px;margin:12px 0;overflow:hidden;background:#15272a}.topic summary{padding:21px 24px;font-size:19px;cursor:pointer}.topic summary span{float:right;color:#b4c7c3;font-size:14px}.topic-inner{padding:0 24px 24px}.topic-actions{display:flex;gap:12px;margin-bottom:14px}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.topic-grid label{display:flex;align-items:center;gap:10px;padding:13px;background:#1c3336;border-radius:8px;font-size:15px;cursor:pointer}.topic-grid small{display:block;color:#9fb6b2;margin-top:4px}.topic-grid input,.recall-toggle input{accent-color:#d0f398;width:18px;height:18px;flex-shrink:0}.study-note{border-left:3px solid #c2e98f;padding:14px 24px;margin:35px 0;color:#aec4bf;max-width:850px}.study-note b{color:#edf3e9}.study-note a,a{color:#c5ed9b}#model-note{padding:0 20px;min-height:32px}#loading{position:absolute;inset:0;display:grid;place-items:center;background:#14272aeb;color:#c7ed9a;z-index:3}#loading[hidden]{display:none}#explanation{color:#d0e1d8;line-height:1.6}#guide-notes{margin:16px 0;font-size:14px;color:#b8cdc4}#guide-notes summary{cursor:pointer;font-weight:600}#guide-content{max-height:330px;overflow:auto;margin-top:12px;padding:10px;background:#14292c}#guide-content pre{white-space:pre-wrap;font:14px/1.55 system-ui}#tissue-facts{line-height:1.6;font-size:14px}#tissue-facts ul{padding-left:20px}.step-line{gap:7px}.step-line span{font-size:12px}#collections{min-height:100px}.source-table{width:100%;border-collapse:collapse;font-size:15px}.source-table th,.source-table td{border-bottom:1px solid #395052;padding:12px;text-align:left}.credits{max-width:950px}.credits h2{margin-top:32px}.credits p,.credits li{line-height:1.7}.credits .small{color:#acc1b9}footer{gap:20px;flex-wrap:wrap}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #d0f398;outline-offset:4px}@media(max-width:800px){.lab-heading{grid-template-columns:1fr;gap:22px;margin-top:20px}.topic-grid{grid-template-columns:repeat(2,1fr)}.collection-heading{align-items:flex-start}.topic summary{font-size:17px}.topic summary span{font-size:12px}.lab-card{padding:24px}}@media(max-width:480px){.topic-grid{grid-template-columns:1fr}.topic summary{padding:18px 14px}.topic-inner{padding:0 14px 14px}.collection-heading{display:block}.collection-heading>div+div{margin-top:14px}.lab-heading h1{font-size:47px}}