.lab-intro,.lab-card,.lesson-science{background:linear-gradient(145deg,#141e30,#0c1321);border:1px solid #b89b602e;color:#e6eaf2}.lab-intro{padding:30px 24px!important}.lab-eyebrow{display:block;color:#d6b575;font-size:10px;font-weight:700;letter-spacing:2px;margin-bottom:12px}.lab-intro h1{font-size:30px;letter-spacing:-1.3px;margin:0 0 14px}.lab-intro p{font-size:17px;line-height:1.65;color:#bdc8d8}.lab-path{display:flex;align-items:center;justify-content:space-between;font-size:12px;margin-top:24px;border-top:1px solid #ffffff16;padding-top:18px;color:#e2c58f}.lab-path span{color:#64758c}.lab-card{padding:24px!important;margin-bottom:18px}.lab-card h2,.lesson-science h2{font-size:21px;letter-spacing:-.6px;line-height:1.4;margin:0 0 16px}.lab-teacher{font-size:15px;line-height:1.85;color:#d1d9e5;margin:0 0 16px}.lab-mechanism{margin:14px 0;color:#aebbd0;font-size:13px;line-height:1.8}.lab-mechanism summary{cursor:pointer;color:#d6b575;padding:8px 0;min-height:40px}.lab-mechanism p{margin:10px 0}.lab-visual{color:#e3bf76;background:radial-gradient(ellipse,#24344d,#101a2a);border-radius:16px;padding:16px 10px;margin:18px 0}.lab-visual svg{display:block;width:100%;height:auto}.lab-model-label{font-size:11px;line-height:1.6;color:#9eacc0;margin:10px 0;text-align:center}.lab-slider-label{font-size:12px;color:#dce2ec;display:block;margin-bottom:12px}.lab-card input[type=range]{width:100%;min-height:36px;accent-color:#dfbe7b;cursor:pointer}.lab-limits{display:flex;justify-content:space-between;font-size:11px;color:#98a8bf;margin-top:2px}.lab-controls{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.lab-controls .btn{min-height:44px}.lab-notice{font-size:13px;line-height:1.8;color:#becbdd;border-left:2px solid #bb9858;padding-left:12px;margin:20px 0}.lab-practice{border-top:1px solid #ffffff17;padding-top:20px;margin-top:22px}.lab-practice .lab-eyebrow{letter-spacing:1px}.lab-practice p{font-size:14px;line-height:1.85;margin-bottom:0}.lab-rest-dial{border:1px solid #c9aa6155;border-radius:100px;width:160px;height:160px;margin:24px auto;display:flex;align-content:center;justify-content:center;align-items:center;flex-wrap:wrap;gap:8px;font-size:42px;color:#e2c58f;background:radial-gradient(circle,#26334a,#111b2d)}.lab-rest-dial span{font-size:22px;color:#7f8ca0}.lab-rest-dial small{flex-basis:100%;font-size:10px;text-align:center;color:#aebcd2}.lab-safety{font-size:12px;line-height:1.8;color:#aab4c5;padding:8px 16px 22px}.lesson-science{padding:20px;border-radius:18px;margin:20px 0}.lesson-science h2{font-size:18px}.lab-science-mechanism{font-size:13px;line-height:1.8;color:#adbbce}.lab-sources{display:flex;gap:16px;flex-wrap:wrap}.lab-sources a{color:#e1bd77;text-decoration:underline;padding:6px 0}.lab-card button:focus-visible,.lab-card input:focus-visible,.lab-mechanism summary:focus-visible{outline:2px solid #e1bd77;outline-offset:4px}.lab-card button:disabled{opacity:.5}#labRestStatus{font-size:14px;line-height:1.6;text-align:center;min-height:44px}.tab span:last-child{white-space:nowrap}