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28px);max-height:80vh;overflow-y:auto;margin:14px}.help-grid{grid-template-columns:1fr 1.4fr;gap:8px 10px;font-size:12.5px}#math-timebar,#equation-panel,#spm-panel,#earth-panel,#light-panel,#gravity-panel,#photo-panel,#fractal-panel,#lab-panel,#trace-results{display:none!important}body.is-mobile[data-mode=math] #equation-panel,body.is-mobile[data-mode=math] #math-timebar,body.is-mobile[data-mode=spm] #spm-panel,body.is-mobile[data-mode=earth] #earth-panel,body.is-mobile[data-mode=light] #light-panel,body.is-mobile[data-mode=gravity] #gravity-panel,body.is-mobile[data-mode=photo] #photo-panel,body.is-mobile[data-mode=fractal] #fractal-panel{display:block!important}body.is-mobile[data-mode=math] #equation-panel,body.is-mobile[data-mode=spm] #spm-panel,body.is-mobile[data-mode=earth] #earth-panel,body.is-mobile[data-mode=light] #light-panel,body.is-mobile[data-mode=gravity] #gravity-panel,body.is-mobile[data-mode=photo] #photo-panel,body.is-mobile[data-mode=fractal] #fractal-panel{top:auto;right:10px;left:10px;bottom:88px;width:auto;max-height:min(52vh,480px)}body.is-mobile[data-mode=math] #timebar,body.is-mobile[data-mode=spm] #timebar,body.is-mobile[data-mode=earth] #timebar,body.is-mobile[data-mode=light] #timebar,body.is-mobile[data-mode=gravity] #timebar,body.is-mobile[data-mode=photo] #timebar,body.is-mobile[data-mode=fractal] #timebar{display:none!important}body.is-mobile[data-mode=math] #math-timebar{left:10px;right:10px;bottom:calc(10px + env(safe-area-inset-bottom,0px));width:auto;max-width:none;transform:none}.body-label{font-size:10.5px}.body-label.small{font-size:9.5px}}@media(max-width:400px){.brand-name{display:none}#sim-date{padding:6px 8px}}#earth-panel{top:64px;right:16px;width:340px;max-height:calc(100vh - 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36px);max-width:640px;height:auto;margin:4px 18px 10px;border:1px solid var(--border);border-radius:6px;background:#0b1520}.spm-tab{padding-bottom:8px}.panel-float{position:fixed;box-shadow:0 12px 40px #00000073}.panel-drag-handle{cursor:grab;-webkit-user-select:none;user-select:none;display:flex;align-items:center;justify-content:space-between;gap:10px}.panel-float.is-dragging,.panel-float.is-dragging .panel-drag-handle{cursor:grabbing}.panel-drag-hint{font-size:11px;font-weight:500;letter-spacing:.04em;color:var(--text-dim);opacity:.75;flex-shrink:0}.panel-float.is-dragging{opacity:.92;z-index:80}.rec-desc-floater{position:fixed;z-index:90;min-width:220px;max-width:min(420px,55vw);padding:0;border-radius:10px;border:1px solid rgba(140,170,255,.28);background:#090d18e0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 10px 36px #00000080;color:#d7dfef;pointer-events:auto}.rec-desc-head{padding:10px 12px 6px;border-bottom:1px solid rgba(140,170,255,.14)}.rec-desc-title{font-size:12px;font-weight:600;color:#ffb0b0}.rec-desc-body{padding:10px 12px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11.5px;line-height:1.45;white-space:pre-wrap;max-height:220px;overflow:auto;color:#d7dfef}.rec-desc-note{padding:0 12px 10px;font-size:10.5px;color:var(--text-dim)}.earth-modes{padding-top:4px}.earth-modes button.active{background:#ffb45429;border-color:#ffbe6e73;color:var(--accent)}.earth-layers{grid-template-columns:1fr 1fr}.earth-layers .btn.active{background:#ffb45429;border-color:#ffbe6e73;color:var(--accent)}.earth-info{padding:12px 18px 0}.earth-layer-name{font-size:17px;font-weight:700;margin-bottom:6px;color:var(--accent)}.earth-info .stat-grid{font-size:12px;margin-top:10px}.earth-info .stat-v{text-align:right}.spm-params{padding:4px 18px 0}.spm-param{margin-bottom:8px}.spm-param .setting-row{margin-bottom:3px;font-size:12px}.spm-param .spm-val{color:var(--accent-cool);font-weight:600;font-variant-numeric:tabular-nums}.spm-param-note{font-size:10px;color:var(--text-dim);opacity:.8;margin-top:2px;line-height:1.35}.spm-group-title{font-size:10px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);padding:12px 0 4px}.spm-group-title:first-child{padding-top:2px}.spm-spec{margin:8px 16px 4px;padding:12px 14px;border-radius:10px;background:#10182a8c;border:1px solid rgba(140,170,255,.12);font-size:12px;line-height:1.55;color:#b8c2d8}.spm-spec-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:6px}.spm-spec p{margin-bottom:6px}.spm-spec-defaults{font-size:11px;color:var(--text-dim)}.spm-spec b{color:var(--accent-cool);font-weight:600}.spm-out-cards{display:grid;grid-template-columns:1fr;gap:8px;padding:4px 16px 8px}.spm-out-card{padding:10px 12px;border-radius:10px;background:#1e28408c;border:1px solid rgba(140,170,255,.14)}.spm-out-k{font-size:10px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text-dim);margin-bottom:4px}.spm-out-v{font-size:18px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}.spm-out-v b{color:var(--accent);font-weight:700}.spm-out-chain{font-size:12px;font-weight:500;color:var(--accent-cool);margin-left:6px}.spm-out-sub{display:block;font-size:12px;font-weight:500;color:var(--text-dim);margin-top:2px}.spm-out-note{font-size:10.5px;color:var(--text-dim);margin-top:4px;line-height:1.35}.spm-table{width:calc(100% - 32px);margin:8px 16px 10px;border-collapse:collapse;font-size:11.5px;font-variant-numeric:tabular-nums}.spm-table th{text-align:right;font-size:9px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-dim);padding:4px 5px;border-bottom:1px solid var(--panel-border)}.spm-table th:first-child,.spm-table td:first-child{text-align:left}.spm-table td{text-align:right;padding:4px 5px;border-bottom:1px solid rgba(140,170,255,.06);color:#b8c2d8}.spm-table tr.spm-warm td{color:var(--accent)}.spm-table tr.spm-hot td{color:#ff8a6a;font-weight:600}.earth-lab-btn{border-color:#6fa8ff66;color:var(--accent-cool)}#spm-summary{margin:10px 16px 0}#light-panel{top:64px;right:16px;width:360px;max-height:calc(100vh - 110px);overflow-y:auto;padding-bottom:16px;z-index:30}.light-presets{grid-template-columns:1fr 1fr}.light-presets .btn.active{background:#ffb45429;border-color:#ffbe6e73;color:var(--accent)}.light-blurb{padding:8px 18px 4px;font-size:12px;line-height:1.55;color:var(--text-dim)}.light-filters{display:flex;gap:6px;padding:4px 16px 6px;flex-wrap:wrap}.light-filters .btn.active{background:#86b7ff29;border-color:#86b7ff66;color:var(--accent-cool)}.light-table-wrap{max-height:220px;overflow-y:auto;margin-bottom:4px}.light-table td,.light-table th{font-size:11px}.light-table tr{cursor:pointer}.light-table tr:hover td{background:#86b7ff0f}.light-table tr.ray-sel td{background:#ffca7a1f;color:var(--accent)}.light-table tr.ray-dim td{opacity:.55}.λ-swatch{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:5px;vertical-align:middle;box-shadow:0 0 6px currentColor}.λ-swatch.lg{width:14px;height:14px;margin-right:10px;flex:none}.light-detail{padding:4px 16px 8px}.ray-hero{display:flex;align-items:center;gap:4px;margin-bottom:6px}.ray-hero-title{font-size:14px;font-weight:700;color:var(--accent)}.ray-hero-sub{font-size:11px;color:var(--text-dim);margin-top:2px}.ray-event{margin:8px 0 12px;padding:8px 10px;border-radius:10px;background:#10182a8c;border:1px solid rgba(140,170,255,.1)}.ray-event-head{display:flex;align-items:center;gap:8px;font-size:12px;margin-bottom:6px;text-transform:capitalize}.ray-event-grid{font-size:11.5px}.ray-event-grid .stat-v{text-align:right}.ray-kind{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:5px;font-size:11px;font-weight:700;font-family:SF Mono,ui-monospace,Menlo,monospace}.ray-kind-refract{background:#86b7ff33;color:var(--accent-cool)}.ray-kind-reflect{background:#ffca7a33;color:var(--accent)}.ray-kind-TIR{background:#ff6a5a38;color:#ff8a6a}.ray-kind-absorb{background:#6fe08a2e;color:var(--live)}.light-verify{margin:6px 16px 0;padding:7px 10px;border-radius:8px;background:#6fe08a14;border:1px solid rgba(111,224,138,.25);font-size:11.5px;color:#b8e0c0}.verify-dot{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:6px;background:var(--live)}.verify-dot.bad{background:#ff8a6a}.light-label{pointer-events:none}#gravity-panel{top:64px;right:16px;width:360px;max-height:calc(100vh - 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