:root{--paper:#f6f5ef;--ink:#213c35;--muted:#73827a;--line:#dedfd5;--green:#d9f27e;--dark:#172c28;--orange:#b96840}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.5 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}button,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid #a17d22;outline-offset:3px}button:disabled{cursor:wait;opacity:.6}header{height:94px;max-width:1500px;padding:0 46px;margin:auto;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;text-decoration:none;color:var(--ink);font-size:21px;font-weight:650;line-height:1.15}.brand-icon{background:var(--ink);color:var(--green);font-size:34px;width:43px;height:43px;border-radius:12px;text-align:center}.brand-sub{display:block;font-size:9px;letter-spacing:3px;margin-top:5px}.trip{letter-spacing:2px;font-size:10px;color:var(--muted)}.trip span{margin:0 16px;color:var(--ink)}.quiet{border:1px solid var(--line);background:transparent;border-radius:7px;padding:9px 14px;color:var(--ink)}main{max-width:1500px;margin:auto;padding:42px 46px 24px}.intro{display:flex;align-items:center;justify-content:space-between;margin-bottom:35px}.eyebrow{font-size:10px;font-weight:650;letter-spacing:1.8px;color:var(--muted)}h1{font-size:44px;line-height:1.13;font-weight:500;letter-spacing:-1.9px;margin:13px 0}h1 span{color:#788579}.intro p{color:#637267;max-width:465px;font-size:14px}.trip-card{padding:24px 30px;border-left:1px solid var(--line);margin-left:30px}.trip-card p{font-size:19px;color:var(--ink);line-height:1.7;margin:10px 0 18px}.trip-card p span{color:#a4ad9e;margin:0 5px}.trip-card>div{color:var(--muted);font-size:11px}.dot{display:inline-block;width:7px;height:7px;background:#b9d867;border-radius:50%;margin-right:8px}.workspace{display:grid;grid-template-columns:270px minmax(0,1fr);border:1px solid #d8ddd2;border-radius:14px;overflow:hidden;background:#fff}.library{border-right:1px solid var(--line);padding:23px 18px;background:#efefe7;display:flex;flex-direction:column}.library-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:19px}.library-heading h2{font-size:16px;font-weight:600;margin:0}.library-heading>span{font-size:11px;background:#e1e4d7;padding:2px 7px;border-radius:5px}.field-label{font-size:9px;letter-spacing:1.5px;color:var(--muted)}select{width:100%;border:1px solid #d5d9cc;background:#f8f8f3;color:var(--ink);padding:9px 10px;border-radius:6px;margin:7px 0 22px}#scenario-list{max-height:625px;overflow:auto;scrollbar-width:thin}.group-title{font-size:10px;letter-spacing:1px;text-transform:uppercase;color:var(--muted);margin:16px 6px 8px}.group-title:first-child{margin-top:0}.route-button{display:flex;text-align:left;align-items:center;width:100%;gap:10px;padding:13px 9px;background:none;border:1px solid transparent;border-radius:7px;color:#4c6054;margin-bottom:3px}.route-button:hover{background:#e4e8db}.route-button.active{background:var(--ink);color:#fff}.route-number{font-size:11px;color:#829080;font-variant-numeric:tabular-nums}.active .route-number{color:var(--green)}.route-name{font-size:12px;line-height:1.4;flex:1}.route-name small{display:block;font-size:10px;color:#7d897c;margin-top:4px}.active small{color:#c0cbbb}.route-status{font-size:12px;color:#699830}.library-footer{margin-top:auto;padding-top:20px;font-size:10px;display:flex;gap:8px;justify-content:space-between;color:var(--muted)}.text-button{background:none;border:none;padding:0;color:inherit;text-decoration:underline;font-size:10px}.sim-top{padding:20px 25px;display:flex;align-items:center;justify-content:space-between;gap:15px}.sim-top h2{font-size:21px;margin:4px 0 0;font-weight:550;letter-spacing:-.4px}.mode{display:flex;background:#eef0e8;border-radius:7px;padding:4px}.mode button{padding:7px 14px;border:0;background:none;border-radius:5px;color:var(--muted);font-size:11px}.mode button[aria-pressed=true]{background:white;color:var(--ink);box-shadow:0 1px 4px #0001}.viewport{height:420px;position:relative;overflow:hidden;background:#b8c4b4}#canvas-host,#canvas-host canvas{width:100%;height:100%;display:block}.scene-tag{position:absolute;top:17px;left:19px;border-radius:5px;padding:7px 10px;background:#172c28e8;color:#e5eccf;font-size:9px;letter-spacing:1px}.camera-controls{position:absolute;right:16px;top:16px;display:flex;gap:6px}.camera-controls button{background:#f7f8efe8;border:0;border-radius:5px;font-size:10px;color:var(--ink);padding:8px 10px}.road-signal{position:absolute;left:20px;top:62px;background:#172c28ed;color:#fff;padding:8px 11px;border-radius:5px;font-size:12px;max-width:190px}.road-signal:empty{display:none}.scene-caption{position:absolute;top:105px;left:20px;max-width:calc(100% - 40px);text-align:left;font-size:11px;color:#fff;text-shadow:0 1px 4px #000;background:#172c289c;border-radius:5px;padding:5px;pointer-events:none}.telemetry{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);display:flex;gap:27px;align-items:center;background:#172c28f2;color:#fff;padding:10px 24px;border:1px solid #ffffff25;border-radius:12px}.telemetry>div{text-align:center;min-width:33px}.telemetry strong{font-size:26px;font-weight:450;line-height:1.1}.telemetry span{display:block;color:#a0b4a1;font-size:8px;letter-spacing:1px}.telemetry .indicator-display{display:flex;align-items:center;gap:15px}.indicator-display span{font-size:18px;color:#607268}.indicator-display .car-icon{font-size:29px;color:#a8b9a6}.indicator-display .on{color:#d9f27e;animation:blink 1s infinite}@keyframes blink{50%{opacity:.25}}.decision{padding:24px 26px 17px;background:#fff}.decision-heading{display:flex;justify-content:space-between;align-items:center}#prompt{font-size:18px;line-height:1.5;margin:11px 0 12px;max-width:750px;min-height:54px}#hint{font-size:12px;color:#63705f;max-width:750px;margin-bottom:17px;min-height:18px}#hint:empty{display:none}.step-dots{display:flex;gap:5px}.step-dots i{width:18px;height:3px;background:#e3e8dd;border-radius:3px}.step-dots i.done{background:#69824c}.step-dots i.current{background:#b2ce5e}#actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.action{border:1px solid #dce1d4;background:#f7f8f1;border-radius:7px;padding:13px;display:flex;align-items:center;gap:12px;color:var(--ink);font-size:12px;text-align:left;min-height:50px}.action:hover{background:#eef5dc;border-color:#a6bb7a}.action kbd{border:1px solid #d6decc;border-radius:4px;padding:1px 6px;font-size:10px;color:#859179}.primary{background:var(--green);color:var(--dark);padding:13px 19px;border:1px solid #bdd867;border-radius:7px;font-weight:600}.decision-foot{display:flex;justify-content:space-between;margin-top:18px;color:#889080;font-size:10px}#feedback:empty{display:none}#feedback{font-size:12px;padding:10px 13px;background:#f8ebdf;border-left:3px solid #b96840;margin:10px 0 14px}#feedback.good{background:#f0f5e3;border-color:#8aa452}.under-sim{padding:11px 26px;border-top:1px solid #edf0e6;color:#84907f;font-size:10px;display:flex;gap:20px;align-items:center}.under-sim span:last-child{margin-left:auto}.swatch{display:inline-block;background:#d9f27e;width:8px;height:8px;border-radius:2px;margin-right:5px}.swatch.blue{background:#799fbd}.bottom-note{display:grid;grid-template-columns:1fr 1fr;gap:55px;margin:21px 0;color:#7e887a;font-size:11px}.bottom-note strong{color:#4a604e}dialog{border:1px solid var(--line);border-radius:14px;padding:28px;max-width:640px;width:calc(100% - 30px);color:var(--ink);background:var(--paper)}dialog::backdrop{background:#102b23a8;backdrop-filter:blur(3px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between}.dialog-heading h2{margin:0}dialog p,dialog li{font-size:13px}dialog a{color:#55762f}.result-number{font-size:42px;color:var(--ink);font-weight:500}.error-list{font-size:12px;padding-left:20px}.fallback{padding:100px 30px;color:var(--ink);text-align:center}.result-note{font-size:12px}.busy #actions{opacity:.65;pointer-events:none}@media(min-width:1500px){.viewport{height:470px}}@media(max-width:1000px){header{padding:0 24px}main{padding:28px 24px}.workspace{grid-template-columns:230px minmax(0,1fr)}h1{font-size:36px}.trip-card{padding:14px 20px}.trip-card p{font-size:16px}.sim-top{padding:16px}.sim-top h2{font-size:18px}.mode button{padding:6px 8px}.viewport{height:370px}.decision{padding:19px}.under-sim{padding:10px 16px;gap:10px}}@media(max-width:720px){header{height:76px;padding:0 18px}.trip{display:none}main{padding:28px 14px}.intro{display:block;margin:0 5px 23px}h1{font-size:35px}.trip-card{display:none}.workspace{display:flex;flex-direction:column}.library{padding:15px;border-right:0;border-bottom:1px solid var(--line)}.library-heading{margin-bottom:10px}.field-label{display:none}select{margin:0 0 10px}#scenario-list{display:flex;gap:5px;max-height:none;overflow-x:auto}.group-title{display:none}.route-button{min-width:180px;max-width:180px;margin:0;padding:9px}.route-name{font-size:11px}.route-name small{font-size:9px}.library-footer{padding-top:10px}.sim-top{padding:16px 13px}.sim-top h2{font-size:17px}.sim-top .eyebrow{font-size:8px}.viewport{height:340px}.scene-tag{font-size:8px;left:10px;top:10px}.camera-controls{right:10px;top:10px}.camera-controls button{font-size:9px;padding:7px}.road-signal{left:10px;top:49px}.decision{padding:19px 15px}#prompt{font-size:17px}#actions{gap:7px}.action{padding:10px;font-size:11px;gap:8px}.under-sim{font-size:9px;flex-wrap:wrap}.under-sim span:last-child{margin-left:0}.bottom-note{grid-template-columns:1fr;gap:0;margin:15px 4px}.scene-caption{font-size:10px}.telemetry{bottom:15px}.decision-foot{font-size:9px}}@media(prefers-reduced-motion:reduce){.indicator-display .on{animation:none}}