:root{font-family:Arial,Helvetica,sans-serif;color:#26343c;background:#fff;font-size:14px;letter-spacing:0;--rule:#d4dfe5;--warm:#b27015;--cool:#087c9c;--a:#148462;--b:#be4c58}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,select{cursor:pointer}a{color:#003399}h1{font-size:25px;margin:4px 0 0}h2{font-size:15px;margin:0}h3{font-size:14px;margin:0 0 12px}p{line-height:1.5}button{background:white;color:#243641;border:1px solid #c3d1db;border-radius:4px;padding:7px 10px}button:hover{background:#edf3f6}.icon{height:32px;width:32px;padding:6px;flex-shrink:0}svg.lucide{width:17px;height:17px;vertical-align:middle}button:focus-visible,input:focus-visible,select:focus-visible,svg:focus-visible{outline:2px solid #146995;outline-offset:3px}svg:focus:not(:focus-visible){outline:none}.masthead{padding:18px 26px;border-bottom:1px solid var(--rule);display:flex;align-items:center;justify-content:space-between;gap:12px}.brand{font-size:12px;text-decoration:none}.article-link{white-space:nowrap}.article-link svg{width:14px}main{display:grid;grid-template-columns:minmax(0,1fr) 300px;max-width:1800px;margin:auto}.workspace{padding:0 24px 24px;min-width:0}.controls{padding:20px;background:#f4f7f9;border-left:1px solid var(--rule)}.topbar{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 0;border-bottom:1px solid var(--rule)}.segmented{display:inline-flex}.segmented button{border-radius:0;font-size:12px;padding:6px 12px}.segmented button:first-child{border-radius:4px 0 0 4px}.segmented button:last-child{border-radius:0 4px 4px 0}.segmented button[aria-selected=true]{background:#e4eef5;color:#003366;border-color:#7c9db4}.section-heading{display:flex;align-items:center;flex-wrap:wrap;min-height:48px;padding:10px 0;gap:10px}.section-heading h2{margin-right:auto}.camera-tools{display:flex;gap:4px}.camera-tools .icon{width:28px;height:28px;padding:4px}#scene{height:420px;overflow:hidden;background:#11191c;position:relative}#scene canvas{display:block;width:100%;height:100%;touch-action:none}#webgl-fallback{padding:25px;color:white;font-size:13px}.scene-legend,.history-key{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:10px 0;font-size:12px}.scene-legend>span:not(.quiet)::before,.history-key>span:not(.quiet)::before{content:'';display:inline-block;width:7px;height:7px;margin-right:5px;background:currentColor;border-radius:50%}.positive{color:var(--warm)}.negative{color:var(--cool)}.probe-a{color:var(--a)}.probe-b{color:var(--b)}.quiet{color:#63747e;font-size:12px}.transport{display:flex;align-items:center;gap:8px;padding-top:3px}.transport input{flex:1;min-width:25px}.transport output{width:40px;font-variant-numeric:tabular-nums}.transport label{font-size:12px}.transport select{width:80px;padding:5px;font-size:12px;border:1px solid var(--rule);border-radius:3px}.wave-summary{display:flex;gap:22px;flex-wrap:wrap;padding:14px 0;border-bottom:1px solid var(--rule);font-size:12px;color:#63747e}.wave-summary strong{font-size:14px;font-weight:500;color:#26343c;font-variant-numeric:tabular-nums}.plots{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--rule);gap:20px}.plots>section{min-width:0}.plots svg{height:235px;display:block;width:100%;touch-action:none}.plots select{font-size:12px;padding:5px;border:1px solid var(--rule);border-radius:3px}.equation{font-size:12px;line-height:1.7}.axis{font-size:10px;color:#62747e}.axis path,.axis line{stroke:#b9cbd5}.grid line{stroke:#e6edf1}.grid path{display:none}.axis-label{font-size:11px;fill:#63747e}.cursor{stroke:#63747e;stroke-dasharray:3 3}.probe-readouts{display:grid;grid-template-columns:1fr 1fr;gap:25px;padding:8px 0}.probe-readouts dl{display:grid;grid-template-columns:auto 1fr;gap:10px 12px;font-size:12px}.probe-readouts dt{color:#63747e}.probe-readouts dd{margin:0;text-align:right;font-variant-numeric:tabular-nums}.constraint{font-size:12px;padding:8px 10px;color:#256950;background:#edf6f0}.controls select{width:100%;padding:8px 5px;border:1px solid #bccdd7;border-radius:3px;background:white}.preset-label{display:block;font-weight:bold;margin-bottom:8px}.controls h2{border-top:1px solid var(--rule);padding-top:15px;margin:20px 0 12px}.control{margin-bottom:13px}.control label{display:flex;justify-content:space-between;gap:6px;font-size:12px;align-items:baseline;min-height:16px}.control label>span{min-width:0}.control output{color:#394d5b;white-space:nowrap;font-variant-numeric:tabular-nums}.control input[type=range]{width:100%;margin:7px 0 0;accent-color:#256289}.control input[type=number]{width:82px;border:1px solid #bccdd7;padding:4px}.directions{font-size:12px;margin:16px 0 0}.directions dt{color:#63747e;margin:10px 0 4px}.directions dd{margin:0;font-variant-numeric:tabular-nums}.check{font-size:12px;display:flex;align-items:center;gap:6px;margin-bottom:14px}.controls details{border-top:1px solid var(--rule);margin-top:20px;padding-top:15px;font-size:12px;line-height:1.6}.controls summary{font-weight:bold;font-size:13px;cursor:pointer}.controls details p{margin:12px 0}.error{color:#b02c2c;font-size:12px}[hidden]{display:none!important}
@media(min-width:1500px){#scene{height:480px}}
@media(max-width:1100px){main{grid-template-columns:minmax(0,1fr) 270px}.workspace{padding-left:16px;padding-right:16px}.controls{padding:16px}.topbar>.quiet{display:none}.plots{grid-template-columns:1fr;gap:0}.plots>section+section{border-top:1px solid var(--rule)}.probe-readouts{grid-template-columns:1fr;gap:10px}.probe-readouts>div+div{border-top:1px solid var(--rule);padding-top:12px}#scene{height:370px}}
@media(max-width:720px){.masthead{padding:15px 16px;align-items:flex-start}h1{font-size:21px}.article-link{font-size:11px;margin-top:6px}main{grid-template-columns:1fr}.workspace{padding:0 12px 20px}.controls{border-left:0;border-top:1px solid var(--rule);display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.controls>select,.controls>label,.controls>h2,.controls>dl,.controls>details,.controls>p,#slice-control{grid-column:1/-1}.control label{flex-wrap:wrap}.controls .control:has(#frequency){grid-column:1/-1}.transport{gap:6px}.transport select{width:70px}.transport output{width:35px}#scene{height:320px}.wave-summary{gap:12px 18px}.probe-readouts dd{overflow-wrap:anywhere}.plots svg{height:230px}.scene-legend{gap:8px 12px}.scene-legend>.quiet{width:100%;font-size:11px}}
@media(max-width:350px){.transport{flex-wrap:wrap}.transport input{min-width:100px}.transport select{width:80px}#scene{height:295px}.probe-readouts dl{grid-template-columns:1fr}.probe-readouts dd{text-align:left;margin-top:-5px}}