:root{font-family:Arial,Helvetica,sans-serif;color:#20313a;background:#fff;font-size:14px;letter-spacing:0;color-scheme:light}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid #007e91;outline-offset:3px}a{color:#07568b}button svg,a svg{width:18px;height:18px;vertical-align:middle;flex-shrink:0}
.masthead{height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:0 22px;border-bottom:3px solid #003399}.masthead .brand{font:24px Georgia,serif;color:#8b1616;text-decoration:none;white-space:nowrap}.brand span{font-size:18px}.title{display:flex;align-items:baseline;gap:14px}.title h1{font-size:20px;margin:0}.title span{font-size:12px;color:#64747a}.masthead>a:last-child{font-size:12px;white-space:nowrap;text-decoration:none}
main{display:grid;grid-template-columns:minmax(0,1fr) 350px;height:calc(100dvh - 64px);min-height:620px}.scene{position:relative;min-width:0;overflow:hidden;background:#10191b;color:#eaf1f2}.scene #viewport{position:absolute;inset:0}.scene canvas{display:block;width:100%;height:100%;touch-action:none}.scene-toolbar{position:absolute;top:16px;left:18px;right:18px;display:flex;align-items:start;justify-content:space-between;gap:10px;pointer-events:none}.scene-toolbar>div{pointer-events:auto;display:flex;gap:2px;background:#162226ee;border:1px solid #435057;border-radius:4px;padding:3px}.scene-toolbar button{display:grid;place-items:center;width:34px;height:32px;background:transparent;border:0;color:#c4d4d8;border-radius:2px}.scene-toolbar button:hover,.scene-toolbar button[aria-pressed=true]{background:#3d535a;color:#fff}.scene-toolbar #play{background:#e7f0f0;color:#132a30}.scene-toolbar select{color:#e4eeee;background:transparent;border:0;max-width:135px;padding:0 7px;font-size:12px}.scene-toolbar select option{color:#1a3038;background:white}.scene-stamp{position:absolute;left:22px;top:73px;display:flex;align-items:center;gap:8px;color:#9cafb5;font-size:11px;pointer-events:none}.status-dot{width:5px;height:5px;background:#63c5ad;border-radius:50%}#elapsed{margin-left:9px;font-variant-numeric:tabular-nums}.scene-footer{position:absolute;bottom:0;left:0;right:0;padding:12px 20px;background:#10191bec;border-top:1px solid #34454a;font-size:11px}.legend,.toggles{display:flex;flex-wrap:wrap;gap:10px 16px}.legend{margin-bottom:10px}.legend span:before{content:'';display:inline-block;width:12px;height:2px;vertical-align:middle;margin-right:6px}.equator:before{background:#68aada}.orbital:before{background:#44d2b2}.apsides:before{background:#edc96b}.nodes:before{background:#ec8bbc}.toggles{color:#b2c3c7}.toggles label{display:flex;align-items:center;gap:3px}.toggles input{accent-color:#63c5ad;margin:0}#render-error{position:absolute;top:110px;left:20px;right:20px;color:#fff1ab;border-left:3px solid #ecb769;padding:15px;background:#382a20}
#labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}.scene-label{position:absolute;left:0;top:0;font-size:11px;white-space:nowrap;padding:3px 5px;color:#d6e7e7;background:#10191baa;border-radius:2px;text-shadow:0 1px 2px #000}.scene-label.angle{font-size:13px;font-weight:bold}.scene-label.satellite{color:#d0ef8a;font-weight:bold}.scene-label.axis{color:#aac5cc}.scene-label.nodes{color:#ec8bbc}.scene-label.apsides{color:#edc96b}
.controls{background:#f7f9fa;overflow:auto;min-width:0;border-left:1px solid #c9d5da}.tabs{display:flex;position:sticky;top:0;background:#f7f9fa;z-index:2;border-bottom:1px solid #ccd7dc;padding:0 18px}.tabs button{flex:1;padding:16px 4px 13px;border:0;border-bottom:3px solid transparent;background:transparent;color:#64757c;font-weight:bold;font-size:13px}.tabs button[aria-selected=true]{color:#003399;border-bottom-color:#003399}.panel{padding:18px}.panel[hidden]{display:none}.presets{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;margin:0 0 20px}.presets button{border:1px solid #c4d0d6;background:#fff;color:#44545e;font-size:12px;border-radius:3px;padding:6px 3px}.presets button[aria-pressed=true]{background:#e0eeee;border-color:#4b918b;color:#095750;font-weight:bold}.panel h2{margin:17px 0 12px;font-size:11px;text-transform:uppercase;color:#6b7c84;letter-spacing:0}.element{margin:0 0 14px}.field{display:flex;align-items:center;gap:4px;min-width:0}.field .element-name{display:flex;align-items:center;text-align:left;gap:8px;background:transparent;border:0;padding:2px 0;color:#233a45;font-size:12px;flex:1;min-width:0;font-weight:bold}.element-name[aria-pressed=true]{text-decoration:underline;text-underline-offset:4px}.symbol{font:italic bold 22px Georgia,serif;display:inline-block;min-width:20px;text-align:center}.gold{color:#9b701b}.coral{color:#c35739}.teal{color:#138677}.pink{color:#a64679}.sky{color:#337fa1}.lime{color:#668426}.field input[type=number]{width:77px;flex-shrink:0;text-align:right;font-variant-numeric:tabular-nums;border:1px solid #c6d2d8;border-radius:3px;background:#fff;color:#23404d;padding:4px 5px;font-size:12px;appearance:textfield}.field input[type=number]::-webkit-inner-spin-button{appearance:none}.field input[aria-invalid=true]{border-color:#b54737}.field>span{width:17px;color:#6f8088;font-size:10px}.element input[type=range]{width:100%;height:17px;margin:7px 0 0;accent-color:#388a82;cursor:pointer}.element[data-element=a] input[type=range]{accent-color:#ae8432}.element[data-element=e] input[type=range]{accent-color:#c35739}.element[data-element=raan] input[type=range]{accent-color:#a64679}.element[data-element=argp] input[type=range]{accent-color:#337fa1}.element[data-element=nu] input[type=range]{accent-color:#668426}.j2{display:flex;align-items:center;gap:6px;border-top:1px solid #ccd7dc;padding:14px 0 10px;font-size:12px;font-weight:bold}.j2 input{accent-color:#176e69}.notice{font-size:12px;line-height:1.5;border-left:3px solid #498e88;background:#eaf2f1;padding:8px;margin:6px 0 12px}.warning{border-color:#b47438;background:#fff0dc;color:#764725}.summary{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid #ccd7dc;gap:14px 10px;padding-top:14px;margin-top:5px}.summary span{display:block;font-size:10px;color:#647780;margin-bottom:3px}.summary strong{font-size:14px;font-variant-numeric:tabular-nums;color:#1d3c45}.constants{margin:0 18px 18px;padding-top:12px;border-top:1px solid #ccd7dc;color:#6b7c83;font-size:10px;line-height:1.7}.state-readouts{margin:15px 0 20px}.state-readouts dt{font-size:11px;color:#6f8189;margin-top:16px}.state-readouts dd{font:13px/1.6 Consolas,monospace;margin:3px 0 0;color:#173f4b;overflow-wrap:anywhere}.command{display:flex;gap:8px;align-items:center;background:#003399;border:0;color:#fff;padding:9px 12px;border-radius:3px}.theory{font-size:12px;line-height:1.65}.theory p{margin:12px 0}.theory dt{font-weight:bold;margin-top:12px;color:#203e48}.theory dd{margin:4px 0}.equation{font:13px/1.8 Georgia,serif;border-top:1px solid #ccd7dc;border-bottom:1px solid #ccd7dc;padding:12px 0}.articles{padding-left:16px}.articles li{margin:8px 0}.references{border-top:1px solid #ccd7dc;padding-top:12px;font-size:11px}
@media(max-width:1050px){.title span{display:none}.masthead .brand{font-size:20px}main{grid-template-columns:minmax(0,1fr) 325px}.scene-toolbar{left:12px;right:12px}.scene-toolbar select{max-width:116px}.scene-toolbar button{width:30px}.field .element-name{font-size:11px}}
@media(max-width:760px){.masthead{height:58px;padding:0 12px;gap:10px}.masthead .brand{font-size:17px}.brand span{font-size:13px}.title h1{font-size:16px}.masthead>a:last-child{display:none}main{display:block;height:auto;min-height:0}.scene{height:490px}.controls{overflow:visible;border-left:0}.tabs{position:static}.panel{max-width:560px;margin:auto}.constants{max-width:524px;margin:0 auto;padding:12px 18px 20px}.scene-toolbar{gap:6px}.scene-toolbar select{max-width:120px}.scene-toolbar button{width:32px}.scene-stamp{left:16px}.scene-footer{padding:10px 14px}}
@media(max-width:420px){.masthead .brand{font-size:15px}.brand span{display:none}.title h1{font-size:16px}.scene{height:445px}.scene-toolbar{flex-wrap:wrap;top:10px;left:10px;right:10px}.scene-toolbar>div{padding:2px}.scene-toolbar button{width:29px;height:29px}.scene-toolbar select{max-width:124px;font-size:11px}.scene-stamp{top:89px;font-size:10px}.legend{font-size:10px;gap:6px 10px}.toggles{font-size:10px;gap:9px}.field .element-name{font-size:12px}.scene-label{font-size:10px}.scene-label.angle{font-size:11px}}