:root{color-scheme:light}body{background:#f3f1eb;color:#172b2e}header{background:#fff;color:#153a37;border-color:#d7ded9}header b{color:#177567}main{max-width:1440px;margin:auto;grid-template-columns:300px minmax(0,1fr);height:820px;padding:22px;gap:18px}#viewport{grid-column:2;grid-row:1;border:1px solid #ccd3ce;border-radius:18px;background:#dddcd4}aside{grid-column:1;grid-row:1;background:#faf9f5;border:1px solid #d9dfd8;border-radius:16px;padding:18px}button,select{background:#fff;color:#21443e;border:1px solid #c5d1c8}button:hover{background:#e1eee7}button.active{background:#cfe9de;outline-color:#418579}input{background:white;color:#1b3733;border-color:#c6d0c8}label,small,p{color:#657b78}.toolbar button{box-shadow:0 3px 12px #14261b15}.message{background:#fffffff0;color:#25473e;border:1px solid #c5d2c8}.red{background:#d64d49;color:white}.black{background:#29393e;color:white}#status{color:#177363}.lesson{max-width:1100px;margin:32px auto;padding:0 24px 50px}.lesson h2{font-size:24px;font-weight:500}.lesson h3{font-size:12px;text-transform:uppercase;letter-spacing:.1em;margin-top:30px}.lesson p{line-height:1.9;max-width:1000px}.telemetry{max-width:1396px;margin:0 auto 24px;padding:22px;background:#fff;border:1px solid #d7ded7;border-radius:16px}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.metric{border-right:1px solid #e1e7e0;padding:12px;font-size:11px;color:#667e77;text-transform:uppercase}.metric strong{display:block;font-size:24px;color:#183e37;margin-top:8px}.scope{width:100%;height:240px;background:#0a1720;border-radius:10px;margin-top:12px}.instrument{padding:12px;border:1px solid #cbd8ce;border-radius:9px;background:#fff;margin-top:14px}.instrument select{width:100%;margin:8px 0}.mini{display:flex;gap:6px;margin:8px 0}.mini>*{min-width:0;flex:1}.device-note{font-size:12px}.tool-label{display:block;font-weight:600;margin:9px 0}.meter-display{background:#e1ead7;color:#183b29;font:22px monospace;padding:12px;border:2px solid #76876c;border-radius:6px}.warning{color:#ac5124}.range{width:100%;accent-color:#287a65}.telemetry h2{font-size:20px}#measure{margin-top:12px}#graph-caption{color:#b3c9d6;padding:8px}.instrument button{font-size:12px}@media(max-width:850px){main{grid-template-columns:1fr;height:auto;padding:12px}#viewport{grid-column:1;grid-row:1;height:65dvh}aside{grid-row:2;grid-column:1;overflow:visible}.telemetry{margin:12px}.metrics{grid-template-columns:1fr 1fr}.lesson{margin-top:20px}}