:root{color-scheme:dark;--bg:#0a121c;--panel:#111c28;--border:#293643;--text:#e9f0f5;--muted:#a6b4c3;--accent:#bde4fd;--warm:#f7c990;--blue:#94c5ff;--mint:#94e1d1;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:16px;line-height:1.5}button,input{font:inherit}button{cursor:pointer;color:inherit;border:1px solid var(--border);background:#172532;border-radius:7px;padding:8px 13px;transition:background .16s,border-color .16s}button:hover{background:#233645;border-color:#5c7386}button:focus-visible,input:focus-visible,a:focus-visible{outline:2px solid #c3e9ff;outline-offset:4px}button:disabled{opacity:.45;cursor:default}a{color:var(--accent);text-underline-offset:3px}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:500}h3{font-size:16px}small{font-size:12px}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.topbar{height:66px;padding:0 28px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);gap:20px;background:#0d1721}.brand{display:flex;align-items:center;gap:12px;font-size:14px;font-weight:650;letter-spacing:.12em;white-space:nowrap}.brand-light{font-weight:400;color:#b6c4cf}.brand-mark{font-size:32px;color:#cfeaff;font-family:Georgia,serif;font-weight:400;line-height:1}.top-actions{display:flex;align-items:center;gap:25px}.top-context{font-size:13px;color:var(--muted)}.quiet{background:transparent;border-color:transparent;font-size:14px;padding:8px 0}.quiet span{margin-left:8px}
.workspace{display:grid;grid-template-columns:minmax(0,1fr) 336px;height:calc(100svh - 66px);min-height:630px}.stage{position:relative;overflow:hidden;min-width:0;background:#101e2b}#viewport{position:absolute;inset:0}canvas{display:block;width:100%;height:100%;touch-action:none}.scene-heading{position:absolute;top:27px;left:30px;right:120px;pointer-events:none;text-shadow:0 2px 20px #030a16}.eyebrow{font-size:12px;letter-spacing:.12em;font-weight:600;color:var(--muted)}.scene-heading h1{font-size:clamp(24px,2.3vw,36px);letter-spacing:-.035em;line-height:1.2;margin-top:8px}.scene-heading p{font-size:14px;color:#c0cdd8;margin-top:8px}.view-controls{position:absolute;right:20px;top:28px;display:flex;gap:7px}.view-controls button{font-size:13px;background:#0c1728b8;backdrop-filter:blur(10px)}.view-controls button:last-child{font-size:21px;line-height:1;padding:8px 12px}.labels{position:absolute;inset:0;pointer-events:none}.world-label{position:absolute;white-space:nowrap;background:#101c2cd9;border:1px solid #53687b;color:#dfebf6;padding:5px 9px;border-radius:4px;font-size:12px;transform:translate(-50%,-50%);backdrop-filter:blur(6px)}.world-label.charge-positive{color:var(--warm);border-color:#b78c555b}.world-label.charge-negative{color:var(--blue);border-color:#6196c75b}.world-label.altitude{color:#b4c7d8;border:0;background:transparent;font-variant-numeric:tabular-nums}.scene-legend{position:absolute;top:138px;left:30px;font-size:12px;display:flex;gap:15px;flex-wrap:wrap;background:#0a172591;padding:7px 10px;border-radius:6px}.scene-legend b{font-size:16px;margin-right:3px}.positive{color:var(--warm)}.negative{color:var(--blue)}.altitude-note{position:absolute;left:30px;bottom:229px;font-size:12px;color:#b8c9d7;text-shadow:0 1px 4px #08111c}.interaction-hint{position:absolute;right:26px;bottom:229px;font-size:12px;color:#b8c9d7;text-shadow:0 1px 4px #08111c}.interaction-hint span{padding:0 5px}.timeline-panel{position:absolute;left:24px;right:24px;bottom:22px;min-height:180px;border:1px solid #4960746b;border-radius:12px;background:#0d1925ec;backdrop-filter:blur(18px);padding:18px 21px 16px;box-shadow:0 10px 35px #050b1640}.timeline-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.timeline-top>div{display:flex;align-items:baseline;gap:12px}.timeline-top strong{font-weight:500;font-size:17px}.timeline-top .eyebrow{color:#88a7c0;font-variant-numeric:tabular-nums}.time-note{color:#9cacbc;font-size:12px}.playback{display:flex;align-items:center;gap:18px;margin-top:17px}.play-button{background:#d2eafb;color:#101d29;border-color:#d2eafb;display:flex;gap:9px;align-items:center;justify-content:center;white-space:nowrap;font-size:14px;font-weight:600;min-height:42px}.play-button:hover{background:#ecf6ff;border-color:#fff}.scrubber{flex:1;min-width:0}input[type=range]{display:block;width:100%;height:18px;margin:0;accent-color:#c2e8ff;cursor:pointer}.timeline-ticks{display:flex;justify-content:space-between;font-size:12px;color:#94a8bc;margin-top:1px}.replay{font-size:25px;background:transparent;border-color:transparent;padding:4px 7px;line-height:1.3}.timeline-panel>p{margin-top:13px;font-size:14px;color:#c5d3df;line-height:1.55;min-height:44px}.inspector{background:linear-gradient(150deg,#13202c,#0e1722);border-left:1px solid #334252;padding:26px 22px 22px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#3a4e61 transparent}.panel-heading h2{font-size:23px;line-height:1.25;letter-spacing:-.03em;margin-top:7px}.type-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:21px}.type-choice{padding:11px 10px;text-align:left;background:#172430;border-color:#33434f;min-height:68px;display:flex;flex-direction:column;justify-content:center;gap:3px;border-radius:7px}.type-choice .type-symbol{font-size:15px;color:#c0d2e0;letter-spacing:.015em;font-weight:600}.type-choice .type-label{font-size:14px;color:#aebdc9;line-height:1.3}.type-choice[aria-pressed=true]{background:#294053;border-color:#afdafa;box-shadow:inset 0 0 0 1px #afdafa18}.type-choice[aria-pressed=true] .type-symbol{color:#e3f3ff}.type-choice.upper .type-symbol{color:#e8bfdd}.type-summary{margin-top:23px;padding-bottom:23px;border-bottom:1px solid var(--border)}.type-summary-heading{display:flex;gap:9px;align-items:center}.type-code{font-size:12px;font-weight:650;color:#c8eaff;letter-spacing:.03em;border:1px solid #4f6b81;background:#23374a;padding:3px 7px;border-radius:4px;white-space:nowrap}.type-summary h3{font-size:16px}.type-summary p{font-size:14px;color:#c1ced9;margin-top:10px;line-height:1.65}.type-summary .detail-note,.detail-note{font-size:12px;line-height:1.6;color:#94a7b8}.layers{padding-top:20px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}.secondary{font-size:12px;color:#94a7b8}.switch-row{position:relative;display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;min-height:45px;font-size:14px}.switch-row small{color:#a8bdd0;margin-left:4px}.switch-row input{position:absolute;right:0;opacity:0;width:40px;height:26px;cursor:pointer}.switch{width:34px;height:20px;background:#33414f;border:1px solid #4d5a68;border-radius:12px;position:relative;flex-shrink:0;transition:background .15s}.switch:after{content:"";position:absolute;width:12px;height:12px;border-radius:50%;background:#b3c0cc;left:3px;top:3px;transition:transform .15s}.switch-row input:checked+.switch{background:#7198b4;border-color:#97c2dc}.switch-row input:checked+.switch:after{background:#f1f9ff;transform:translateX(14px)}.switch-row input:focus-visible+.switch{outline:2px solid #c3e9ff;outline-offset:4px}.collision-button{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;gap:10px;padding:13px 12px;margin-top:13px;background:#192a36;border-color:#3c5668}.collision-button strong{font-size:14px;font-weight:500;display:block}.collision-button small{color:#abc0d0;display:block;margin-top:3px;line-height:1.5}.collision-button>span:last-child{font-size:20px;color:#b9deee}.model-note{padding-top:24px}.note-rule{display:block;width:24px;height:1px;background:#778d9e;margin-bottom:12px}.model-note p{font-size:12px;line-height:1.7;color:#90a4b4}.text-button{padding:0;background:transparent;border:0;font-size:12px;color:#b9d4e9;margin-top:8px;text-decoration:underline;text-underline-offset:3px}.text-button:hover{background:transparent}.loading,.error-panel{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px;background:#0b1521;z-index:12}.loading strong{font-size:21px;font-weight:500}.loading>span:last-child{font-size:14px;color:#97acbd}.load-orbit{width:35px;height:35px;border:1px solid #34485b;border-top-color:#c6e6fc;border-radius:50%;animation:spin 1.2s linear infinite;margin-bottom:6px}.error-panel{padding:35px;text-align:center}.error-panel p{max-width:420px;color:#b6c6d3;font-size:14px}.no-js{position:fixed;inset:0;background:#0a1521;display:grid;place-items:center;padding:30px;z-index:99}
dialog{color:var(--text);background:#111e2a;border:1px solid #4b6072;border-radius:14px;padding:0;max-width:calc(100vw - 32px);max-height:calc(100svh - 40px);box-shadow:0 30px 100px #0009}dialog::backdrop{background:#040c15be;backdrop-filter:blur(6px)}.science-dialog{width:920px}.dialog-top{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:23px 26px;border-bottom:1px solid #314555;background:#152534}.dialog-top h2{font-size:25px;letter-spacing:-.02em;margin-top:6px;line-height:1.3}.close-button{border-color:transparent;background:transparent;font-size:28px;line-height:1;align-self:flex-start;padding:5px 8px}.dialog-body{padding:24px 28px 28px}.dialog-body p{font-size:15px;color:#c4d0db;line-height:1.7}.dialog-body>h3{margin-top:25px;margin-bottom:9px}.science-columns{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:25px}.science-columns h3{color:#e4f1fa;margin-bottom:8px}.source-list{padding-left:19px;color:#9cb0c3;font-size:14px;line-height:1.7}.source-list li{padding:4px 0}.collision-dialog{width:1040px}.micro-layout{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(260px,1fr)}.micro-view{position:relative;min-height:390px;background:#091624}#microViewport{position:absolute;inset:0}.micro-caption{position:absolute;bottom:20px;left:18px;right:18px;display:flex;gap:14px;justify-content:center;font-size:12px;flex-wrap:wrap;background:#071221b0;padding:7px}.droplet-label{color:#c6e4fb}.micro-text{padding:30px 26px}.micro-text h3{font-size:23px;line-height:1.25;margin-top:9px;margin-bottom:15px}.micro-text p{font-size:15px;line-height:1.65;color:#c4d2de}.micro-text label{display:block;margin-top:20px;font-size:13px;color:#a2b9cd}.micro-text input{margin-top:10px;margin-bottom:15px}.micro-text .detail-note{margin-top:22px;font-size:12px;color:#9eafbd}.micro-text .secondary{font-size:12px;margin-top:12px;color:#8ea6ba}
@keyframes spin{to{transform:rotate(360deg)}}@media(min-width:1500px){.workspace{grid-template-columns:minmax(0,1fr) 370px}.inspector{padding:30px 27px}.type-choice{min-height:73px}.type-choice .type-label{font-size:13px}.timeline-panel{max-width:1050px;margin:0 auto}.scene-heading h1{font-size:38px}}
@media(max-width:1100px){.workspace{grid-template-columns:minmax(0,1fr) 300px}.inspector{padding:22px 18px}.scene-heading{left:22px;top:24px;right:20px}.scene-heading h1{font-size:27px}.scene-heading p{max-width:300px}.view-controls{top:auto;bottom:264px;right:20px}.timeline-panel{left:16px;right:16px;padding:15px 16px;min-height:196px}.altitude-note,.interaction-hint{bottom:237px}.altitude-note{left:20px}.interaction-hint{display:none}.top-context{display:none}.timeline-ticks{font-size:12px}.playback{gap:10px}.play-button{padding:8px 10px;font-size:13px}.time-note{max-width:116px;text-align:right}.scene-legend{left:22px}.panel-heading h2{font-size:21px}}
@media(max-width:760px){.topbar{height:59px;padding:0 17px}.brand{font-size:11px;gap:8px;letter-spacing:.085em}.brand-mark{font-size:29px}.top-actions{gap:0}.top-actions button{font-size:12px}.top-actions button span{display:none}.workspace{display:flex;flex-direction:column;height:auto;min-height:0}.stage{height:72svh;min-height:590px;max-height:900px}.scene-heading{left:20px;top:22px;right:18px}.scene-heading h1{font-size:27px}.scene-heading p{font-size:13px;max-width:100%}.view-controls{bottom:249px;right:16px}.scene-legend{top:128px;left:20px;font-size:11px}.altitude-note{bottom:225px;font-size:11px}.timeline-panel{bottom:14px;left:12px;right:12px;min-height:196px;padding:14px}.timeline-panel>p{font-size:13px;min-height:60px}.timeline-top strong{font-size:15px}.timeline-top .eyebrow{font-size:11px}.time-note{font-size:11px;max-width:110px}.playback{margin-top:13px;gap:9px}.play-button{font-size:12px;min-height:40px;padding:7px 9px}.timeline-ticks{font-size:12px}.timeline-ticks span:nth-child(2),.timeline-ticks span:nth-child(3){display:none}.replay{font-size:23px;padding:3px}.inspector{border-left:0;border-top:1px solid #34495b;padding:24px 22px;overflow:visible}.type-grid{grid-template-columns:repeat(4,1fr);gap:7px}.type-choice{padding:11px 8px;min-height:70px}.type-choice .type-symbol{font-size:14px}.type-choice .type-label{font-size:13px}.type-summary{margin-top:20px}.layers{max-width:520px}.model-note{max-width:570px}.panel-heading h2{font-size:24px}.science-columns{grid-template-columns:1fr}.dialog-top{padding:20px}.dialog-top h2{font-size:21px}.dialog-body{padding:20px}.micro-layout{display:flex;flex-direction:column}.micro-view{min-height:300px}.micro-text{padding:22px}.micro-text h3{font-size:21px}}
@media(max-width:390px){.brand-light{display:block;font-size:9px}.brand{line-height:1.35}.type-grid{grid-template-columns:repeat(2,1fr)}.timeline-top{align-items:flex-start}.timeline-top>div{gap:6px}.timeline-top strong{font-size:14px}.scene-heading h1{font-size:25px}.time-note{max-width:91px}.play-button{font-size:11px}.timeline-ticks span{font-size:12px}.timeline-panel>p{min-height:67px}.view-controls{bottom:258px}.altitude-note{bottom:235px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}

@media(max-width:500px){.type-grid{grid-template-columns:repeat(2,1fr)}.type-choice .type-label{font-size:14px}.type-choice{min-height:68px}}