:root{--bg: #04060d;--panel: rgba(9, 13, 24, .72);--panel-border: rgba(140, 170, 220, .14);--panel-strong: rgba(9, 13, 24, .9);--text: #dfe6f5;--text-dim: #8b97b3;--text-faint: #5c6785;--accent: #7cc7ff;--accent-2: #ffb454;--danger: #ff5f6d;--ok: #5fd3a6;--mono: "JetBrains Mono", "SF Mono", "Cascadia Mono", Consolas, "Roboto Mono", monospace;--sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--radius: 10px;--left-w: 330px;--right-w: 340px;--top-h: 52px;--bottom-h: 116px}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:13px;overflow:hidden}button,input,select{font:inherit;color:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:#8caadc2e;border-radius:4px}::-webkit-scrollbar-track{background:transparent}#app{position:fixed;inset:0}#scene-canvas,#earth-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}#earth-canvas{display:none}body[data-view=earth] #earth-canvas{display:block}body[data-view=earth] #scene-canvas,body[data-view=compare] #scene-canvas{visibility:hidden}#earth-canvas{cursor:grab}#earth-canvas:active{cursor:grabbing}.ui-layer{position:absolute;inset:0;pointer-events:none;display:grid;grid-template-columns:var(--left-w) 1fr var(--right-w);grid-template-rows:var(--top-h) 1fr var(--bottom-h);gap:10px;padding:10px;transition:opacity .25s}body.ui-hidden 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td.num{font-family:var(--mono);font-size:11.5px}.compare-panel{grid-row:2;grid-column:2;overflow:auto}.intro{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#04060d8c;z-index:40;backdrop-filter:blur(6px)}.intro-card{max-width:560px;background:var(--panel-strong);border:1px solid var(--panel-border);border-radius:14px;padding:24px 28px;line-height:1.5}.intro-card h1{margin:0 0 4px;font-size:22px;letter-spacing:.04em}.intro-card p{color:var(--text-dim);margin:8px 0}.intro-card ol{color:var(--text-dim);padding-left:18px;margin:8px 0}.intro-card kbd{font-family:var(--mono);font-size:11px;border:1px solid var(--panel-border);border-radius:4px;padding:1px 5px;color:var(--text)}@media(max-width:1180px){:root{--left-w: 290px;--right-w: 300px}}@media(max-width:900px){.ui-layer{grid-template-columns:1fr;grid-template-rows:auto auto 1fr auto auto}.topbar{flex-wrap:wrap;row-gap:6px;padding:6px 10px}.topbar .spacer{display:none}.left-panel{grid-row:3;grid-column:1;max-height:42vh}.right-panel{grid-row:4;grid-column:1;max-height:34vh}.center-overlay{grid-row:2;grid-column:1;min-height:auto;display:flex;flex-wrap:wrap;align-items:flex-end;gap:4px 14px}.center-overlay .hud,.center-overlay .earth-status,.center-overlay .scale-bar,.center-overlay .fps{position:static;max-width:none}.center-overlay .hud{flex:1 1 100%;flex-wrap:wrap;gap:6px}.center-overlay .earth-status{flex:1 1 100%}.center-overlay .scale-bar i{width:80px}.bottombar{grid-row:5;grid-template-columns:1fr;gap:6px;padding:6px 10px}.time-controls{flex-wrap:wrap;justify-content:center}.actions{justify-content:center;flex-wrap:wrap}.brand-sub,.topbar .hint{display:none}.compare-panel{grid-row:3 / 5;grid-column:1}body[data-view=compare] .left-panel,body[data-view=compare] .right-panel{display:none}}@media(max-width:600px){body[data-view=earth] .right-panel{display:none}}