:root{color-scheme:dark;--ink: #edf3ff;--ink-soft: #9baac2;--paper: #060b14;--surface: #101a2b;--surface-muted: #152238;--rule: #28374e;--chart-rule: #61748f;--chart-gridline: #52657f;--control-rule: #52647c;--accent: #85cfff;--measured: #edf3ff;--spherical: #7edacc;--flat: #f4b879;--series-a: #ffd59a;--series-b: #74bdff;--series-c: #b8a0ff;--font-body: ui-sans-serif, system-ui, sans-serif;--font-ui: ui-sans-serif, system-ui, sans-serif;--text-xs: .75rem;--text-control: .8125rem;--text-sm: .875rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--panel-width: 14.5rem;--bar-height: 3.8rem;--panel-top: 5.1rem;--panel-bottom-space: 12rem;--mobile-nav-height: 4.5rem;--mobile-controls-space: 14rem;--surface-blur: 12px;--radius: .65rem;--shadow: 0 .8rem 2.6rem rgb(0 0 0 / 25%);--bar-background: #0a111e;--scene-centre: #18243d;--scene-middle: #0b1221;--scene-edge: #060b14;--scene-speck: #a9c5df99;--tool-active: #254768;--tool-active-ink: #dcf3ff;--label-shadow: 0 1px 5px #000}:root[data-theme=light]{color-scheme:light;--ink: #172d47;--ink-soft: #4c617b;--paper: #f1f5fb;--surface: #ffffff;--surface-muted: #e6eef8;--rule: #c7d3e2;--chart-rule: #70829c;--chart-gridline: #7c8da5;--control-rule: #7087a2;--accent: #1468a3;--series-a: #956018;--series-b: #236eb8;--series-c: #7956a7;--spherical: #246b63;--flat: #975719;--measured: #172d47;--shadow: 0 .8rem 2.6rem rgb(27 26 23 / 8%);--bar-background: #f8faff;--scene-centre: #ffffff;--scene-middle: #eaf1fa;--scene-edge: #dce7f5;--scene-speck: #48648377;--tool-active: #d6e9fa;--tool-active-ink: #154e7c;--label-shadow: 0 1px 4px #fff}*{box-sizing:border-box}.verlet-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}body{margin:0;background:var(--paper);color:var(--ink);font:1rem/1.6 var(--font-body)}.verlet-app{display:flex;flex-direction:column;min-height:100vh;min-height:100dvh}.verlet-bar{position:relative;z-index:10;display:flex;flex-wrap:nowrap;align-items:center;gap:1rem;min-height:var(--bar-height);padding:.65rem 1rem;background:var(--bar-background);border-bottom:1px solid var(--rule);backdrop-filter:blur(var(--surface-blur))}.verlet-bar__brand{position:relative;flex:none;margin:0;padding-left:.9rem;font-size:.85rem;font-weight:650;font-family:var(--font-ui);text-transform:uppercase;letter-spacing:.16em;color:var(--ink)}.verlet-bar__brand:before{content:"";position:absolute;top:50%;left:0;width:.38rem;height:.38rem;background:var(--accent);border-radius:50%;transform:translateY(-50%)}.verlet-bar [data-scenarios]{min-width:0;overflow-x:auto;scrollbar-width:none}.verlet-bar [data-scenarios]::-webkit-scrollbar{display:none}.verlet-bar__end{display:flex;flex:none;align-items:center;gap:.5rem;margin-left:auto}.verlet-featured{font-weight:600;color:var(--ink);border-color:var(--accent);white-space:nowrap}.verlet-featured:hover{color:var(--ink);background:color-mix(in srgb,var(--accent) 12%,transparent);border-color:var(--accent)}.verlet-main{position:relative;flex:1;min-height:32rem;height:calc(100vh - var(--bar-height));height:calc(100dvh - var(--bar-height))}.verlet-world,.verlet-world__labels{position:absolute;inset:0}.verlet-world{background:radial-gradient(1px 1px at 17% 22%,var(--scene-speck) 80%,transparent),radial-gradient(1px 1px at 79% 33%,var(--scene-speck) 80%,transparent),radial-gradient(1px 1px at 63% 73%,var(--scene-speck) 80%,transparent),radial-gradient(1px 1px at 35% 58%,var(--scene-speck) 80%,transparent),radial-gradient(1px 1px at 88% 82%,var(--scene-speck) 80%,transparent),radial-gradient(ellipse at 50% 52%,var(--scene-centre) 0%,var(--scene-middle) 45%,var(--scene-edge) 80%)}.verlet-world canvas{display:block;width:100%;height:100%}.verlet-world__labels{pointer-events:none;overflow:hidden}.verlet-label{position:absolute;top:0;left:0;padding:.05rem .3rem;font:var(--text-xs)/1.3 var(--font-ui);letter-spacing:.04em;color:var(--ink-soft);text-shadow:var(--label-shadow);white-space:nowrap}.verlet-label[data-selected=true]{color:var(--ink);border-bottom:1px solid currentcolor}.verlet-world__fallback{margin:0;padding:var(--space-8);text-align:center;color:var(--ink-soft)}.verlet-world-note{position:absolute;z-index:2;top:.9rem;right:calc(var(--panel-width) + 2rem);left:calc(var(--panel-width) + 2rem);max-width:38rem;margin:0 auto;padding:var(--space-2) var(--space-3);font:var(--text-xs)/1.45 var(--font-ui);color:var(--ink-soft);background:color-mix(in srgb,var(--surface) 91%,transparent);border:1px solid var(--rule);border-left:3px solid var(--accent);border-radius:var(--radius);backdrop-filter:blur(var(--surface-blur))}.verlet-world-note__bridge{display:block;margin-top:var(--space-2)}.verlet-world-note__link{margin-top:var(--space-1);font-size:var(--text-control);text-align:left;white-space:normal}.verlet-panel__caveat{margin:var(--space-3) 0 0;font-size:var(--text-xs);line-height:1.45;color:var(--ink-soft)}.verlet-panel{position:absolute;top:var(--panel-top);width:var(--panel-width);max-height:calc(100% - var(--panel-bottom-space));overflow-y:auto;padding:1rem;background:color-mix(in srgb,var(--surface) 90%,transparent);border:1px solid var(--rule);border-radius:var(--radius);backdrop-filter:blur(var(--surface-blur));box-shadow:var(--shadow)}.verlet-panel--left{left:.9rem}.verlet-panel--right{right:.9rem}.verlet-panel__title{margin:0 0 .75rem;padding-bottom:.55rem;font-size:var(--text-xs);font-family:var(--font-ui);font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--ink-soft);border-bottom:1px solid var(--rule)}.verlet-panel__empty{margin:0;font-size:.8rem;color:var(--ink-soft)}.verlet-panel__actions{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.7rem}.verlet-entities{display:grid;gap:.1rem;margin:0;padding:0;list-style:none}.verlet-entity{position:relative;display:flex;justify-content:space-between;align-items:baseline;gap:var(--space-2);width:100%;min-height:2rem;padding:.32rem .4rem .32rem .7rem;font:inherit;font-size:var(--text-sm);text-align:left;color:inherit;background:none;border:1px solid transparent;cursor:pointer}.verlet-entity:hover{background:color-mix(in srgb,var(--ink) 4%,transparent);border-color:transparent}.verlet-entity[aria-pressed=true]{background:color-mix(in srgb,var(--ink) 6%,transparent);border-color:var(--rule);box-shadow:inset 2px 0 var(--accent)}.verlet-entity__kind{font-size:var(--text-xs);font-family:var(--font-ui);letter-spacing:.06em;color:var(--ink-soft)}.verlet-inspector__name{display:flex;flex-direction:column;gap:.1rem;margin:0 0 .6rem;font-size:1.2rem;line-height:1.25}.verlet-inspector__facts{display:grid;grid-template-columns:auto auto;gap:.25rem .75rem;margin:0 0 var(--space-4);font-size:.8rem}.verlet-inspector__facts dt{color:var(--ink-soft)}.verlet-inspector__facts dd{margin:0;text-align:right;font-variant-numeric:tabular-nums}.verlet-panel__details{margin-top:var(--space-3);padding-top:var(--space-3);color:var(--ink-soft);border-top:1px solid var(--rule)}.verlet-panel__details summary{font:var(--text-xs)/1.4 var(--font-ui);cursor:pointer}.verlet-hud{position:absolute;bottom:1.4rem;left:50%;transform:translate(-50%);display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:.5rem 1rem;width:min(43rem,calc(100% - 2rem));padding:.6rem .8rem;background:color-mix(in srgb,var(--surface) 94%,transparent);border:1px solid var(--rule);border-radius:.85rem;backdrop-filter:blur(var(--surface-blur));box-shadow:var(--shadow)}.verlet-hud__field,.verlet-hud__readout{display:flex;align-items:center;gap:.4rem;margin:0;font-size:var(--text-xs);font-family:var(--font-ui);color:var(--ink-soft)}.verlet-hud__field{display:grid;grid-template-columns:auto auto;align-items:center}.verlet-hud__field input{grid-row:2;grid-column:1 / -1}.verlet-hud__field output{color:var(--ink);font-size:var(--text-xs);font-variant-numeric:tabular-nums;text-align:right}.verlet-hud__readout output{font-variant-numeric:tabular-nums;color:var(--ink)}.verlet-hud__hint{flex-basis:100%;padding-top:.4rem;text-align:center;border-top:1px solid var(--rule);margin:0;font-size:var(--text-xs);font-family:var(--font-ui);color:var(--ink-soft)}.verlet-hud input[type=range]{width:8rem;accent-color:var(--accent)}.verlet-chips{display:flex;flex-wrap:wrap;gap:.4rem}.verlet-chip,.verlet-toggle{font-family:var(--font-ui);background:transparent;border:1px solid var(--control-rule);border-radius:.2rem;cursor:pointer}.verlet-chip{min-height:2rem;padding:.3rem .65rem;font-size:var(--text-control);line-height:1.4;color:inherit}.verlet-chip:hover{color:var(--ink);border-color:var(--ink-soft)}.verlet-chip[aria-pressed=true],.verlet-chip[role=tab][aria-selected=true],.verlet-toggle[aria-pressed=true]{color:var(--paper);background:var(--ink);border-color:var(--ink)}.verlet-scenario{color:var(--ink-soft);border-color:transparent;white-space:nowrap}.verlet-scenario:hover{background:var(--surface-muted);border-color:transparent}.verlet-scenario[aria-pressed=true]{color:var(--ink);background:transparent;border-color:var(--control-rule);font-weight:700}.verlet-scenario__mark{display:none}.verlet-scenario[aria-pressed=true] .verlet-scenario__mark{display:inline;margin-inline-end:var(--space-1)}.verlet-drawer{width:100%;max-width:62rem;margin:0 auto;padding:2.5rem 1.5rem 5rem;border-top:1px solid var(--rule)}.verlet-drawer__head{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-4);margin-bottom:var(--space-6)}.verlet-drawer__head h2{margin:0 0 .3rem;font-size:1.5rem}.verlet-drawer__head h2:focus{outline:none}.verlet-drawer__lede{margin:0;max-width:34rem;color:var(--ink-soft)}.verlet-analysis{min-width:0;margin-top:var(--space-10)}.verlet-drawer [data-analyses]{gap:var(--space-4);border-bottom:1px solid var(--rule)}.verlet-drawer [role=tab]{display:flex;flex-direction:column;gap:.1rem;padding-inline:0;color:var(--ink-soft);text-align:left;background:transparent;border:0;border-bottom:2px solid transparent;border-radius:0}.verlet-drawer [role=tab][aria-selected=true]{color:var(--ink);background:transparent;border-color:var(--accent)}.verlet-analysis-tab__badge{font-size:var(--text-xs);letter-spacing:.02em;color:var(--ink-soft)}.verlet-header h3{font-size:clamp(2rem,5vw,3.15rem);line-height:1.08;margin:0 0 .5rem;letter-spacing:-.025em}.verlet-lede{margin:0 0 var(--space-10);max-width:42rem;color:var(--ink-soft)}.verlet-section{margin:0 0 3rem}.verlet-section h4{font-size:var(--text-control);text-transform:uppercase;letter-spacing:.09em;color:var(--ink-soft);border-bottom:1px solid var(--rule);padding-bottom:var(--space-2);margin:0 0 1.25rem}.verlet-chart{min-width:0;margin:0}.verlet-chart__viewport{max-width:100%;overflow-x:auto;overscroll-behavior-inline:contain;padding-block:var(--space-3);border-block:1px solid var(--rule)}.verlet-chart svg{width:100%;min-width:45rem;height:auto}.verlet-axes line{stroke:var(--chart-rule);stroke-width:1}.verlet-axes .verlet-gridline{stroke:var(--chart-gridline);stroke-width:1}.verlet-tick,.verlet-axis-label{fill:var(--ink-soft);font-family:var(--font-ui);font-size:11px}.verlet-series--measured circle{fill:var(--measured)}.verlet-series--measured line{stroke:var(--measured);stroke-width:1.5}.verlet-series--predicted path{stroke-width:2;stroke-linejoin:round}.verlet-model-mark{fill:var(--paper);stroke-width:1.5}.verlet-series--predicted[data-series="0"]{stroke:var(--series-a)}.verlet-series--predicted[data-series="1"]{stroke:var(--series-b)}.verlet-series--predicted[data-series="2"]{stroke:var(--series-c)}.verlet-series--predicted[data-model=spherical]{stroke:var(--spherical)}.verlet-series--predicted[data-model=flat-structured]{stroke:var(--flat)}.verlet-scene{margin:0}.verlet-scene__stage{position:relative;width:100%;aspect-ratio:16 / 9;min-height:15rem;border:1px solid var(--rule);border-radius:var(--radius);display:grid;place-items:center}.verlet-scene__stage--tall{aspect-ratio:5 / 4}.verlet-scene__stage canvas{display:block;width:100%;height:100%}.verlet-scene__fallback{margin:0;padding:var(--space-6);max-width:32rem;text-align:center;color:var(--ink-soft);font-family:var(--font-ui);font-size:var(--text-sm)}.verlet-player{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem .9rem;margin:0 0 var(--space-4);padding-block:var(--space-3);font-family:var(--font-ui);font-size:var(--text-sm);border-block:1px solid var(--rule)}.verlet-player__time{color:var(--ink-soft)}.verlet-player input[type=range]{flex:1 1 12rem;min-width:8rem;margin:0;accent-color:var(--accent)}.verlet-player output{font-variant-numeric:tabular-nums;font-weight:600;min-width:4.5rem;text-align:right}.verlet-toggles{display:flex;flex-wrap:wrap;gap:var(--space-2);margin:0 0 .9rem}.verlet-toggle{font-size:var(--text-sm);line-height:inherit;color:var(--ink-soft);border-radius:2px;padding:.35rem .8rem}.verlet-toggle:hover{color:var(--ink);border-color:var(--ink-soft)}.verlet-toggle[aria-pressed=true]{font-weight:600}.verlet-prose{max-width:40rem}.verlet-prose p{margin:0 0 var(--space-4)}.verlet-prose p:last-child{margin-bottom:0}.verlet-steps{margin:1.25rem 0 0;padding-left:1.4rem}.verlet-steps li{margin-bottom:.6rem}.verlet-steps li:last-child{margin-bottom:0}.verlet-fields{display:grid;gap:1.75rem 2.5rem;grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));min-width:0}.verlet-field{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:baseline;gap:.4rem 1rem;min-width:0;padding-top:var(--space-3);font-family:var(--font-ui);border-top:1px solid var(--rule)}.verlet-field label{font-size:var(--text-sm)}.verlet-field output{font-variant-numeric:tabular-nums;font-size:.95rem;font-weight:600;text-align:right}.verlet-field input[type=range]{grid-column:1 / -1;width:100%;margin:0;accent-color:var(--accent)}.verlet-field__hint{grid-column:1 / -1;margin:0;font-size:var(--text-control);color:var(--ink-soft)}.verlet-dataset{max-width:46rem;font-family:var(--font-ui)}.verlet-dataset__intro{margin:0 0 var(--space-4);color:var(--ink-soft)}.verlet-dataset__actions{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-2) var(--space-3)}.verlet-dataset__actions label{font-size:var(--text-sm);font-weight:600}.verlet-dataset__actions input[type=file]{min-width:0;max-width:100%;font:var(--text-control)/1.4 var(--font-ui);color:var(--ink-soft)}.verlet-dataset__actions a{color:inherit;text-decoration:none}.verlet-dataset__status{margin-top:var(--space-4);padding:var(--space-3) var(--space-4);color:var(--ink-soft);background:var(--surface-muted);border-left:3px solid var(--rule)}.verlet-dataset__status--invalid{border-left-color:var(--accent)}.verlet-dataset__status--loaded{color:var(--ink);border-left-color:var(--spherical)}.verlet-dataset__status p,.verlet-dataset__status ul,.verlet-dataset__provenance{margin:0}.verlet-dataset__status ul{padding-left:1.2rem}.verlet-dataset__provenance{display:grid;gap:var(--space-1) var(--space-4);margin-top:var(--space-3)}.verlet-dataset__provenance div{display:grid;grid-template-columns:minmax(7rem,.35fr) minmax(0,1fr);gap:var(--space-2)}.verlet-dataset__provenance dt{color:var(--ink-soft)}.verlet-dataset__provenance dd{margin:0;overflow-wrap:anywhere}.verlet-dataset__status .verlet-dataset__authenticity{margin-top:var(--space-3);padding-top:var(--space-3);font-size:var(--text-control);color:var(--ink-soft);border-top:1px solid var(--rule)}.verlet-legend{list-style:none;display:flex;flex-wrap:wrap;gap:1.25rem;padding:var(--space-3) 0 0;margin:0;font-family:var(--font-ui);font-size:var(--text-sm);color:var(--ink-soft)}.verlet-legend li{display:flex;align-items:center;gap:var(--space-2)}.verlet-legend li:before{content:"";width:1.6rem;height:0;border-top:2px solid currentColor;flex:none}.verlet-legend li[data-nature=measured]:before{border-top:0;height:.5rem;width:.5rem;border-radius:50%;background:var(--measured)}.verlet-legend li[data-series="0"]:before{border-top-color:var(--series-a)}.verlet-legend li[data-series="1"]:before{border-top-color:var(--series-b)}.verlet-legend li[data-series="2"]:before{border-top-color:var(--series-c)}.verlet-legend li[data-model=spherical]:before{border-top-color:var(--spherical)}.verlet-legend li[data-model=flat-structured]:before{border-top-color:var(--flat)}.verlet-caveat,.verlet-refusal{border-left:3px solid var(--accent);padding:.75rem 0 .75rem 1rem;margin:0 0 var(--space-6);color:var(--ink-soft);font-family:var(--font-ui);font-size:var(--text-sm);max-width:46rem;background:color-mix(in srgb,var(--accent) 5%,transparent)}.verlet-refusal__title{margin:0 0 var(--space-2);color:var(--ink);font-weight:600}.verlet-refusal ul{margin:0;padding-left:1.1rem}.verlet-refusal li+li{margin-top:.4rem}.verlet-tables{display:grid;gap:var(--space-8);min-width:0}.verlet-table-scroll{max-width:100%;overflow-x:auto;overscroll-behavior-inline:contain}.verlet-app table{width:100%;border-collapse:collapse;font-family:var(--font-ui);font-size:var(--text-sm)}.verlet-app caption{text-align:left;color:var(--ink-soft);padding-bottom:.6rem;font-size:var(--text-sm)}.verlet-app th,.verlet-app td{text-align:left;padding:.5rem .75rem .5rem 0;border-bottom:1px solid var(--rule);font-weight:400}.verlet-app thead th{color:var(--ink-soft);font-size:var(--text-control);text-transform:uppercase;letter-spacing:.05em}.verlet-app tbody th[scope=row],.verlet-app td{font-variant-numeric:tabular-nums}@media(max-width:30rem){.verlet-fields{grid-template-columns:minmax(0,1fr)}}@media(max-width:34rem){.verlet-featured{white-space:normal}}:focus-visible{outline:2px solid var(--accent);outline-offset:3px}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}.verlet-tagline{color:var(--ink-soft);font-size:var(--text-xs);white-space:nowrap}.verlet-tools{position:absolute;top:1rem;left:50%;transform:translate(-50%);display:flex;gap:.3rem;padding:.45rem;z-index:4;border:1px solid var(--rule);border-radius:.85rem;background:color-mix(in srgb,var(--surface) 94%,transparent);box-shadow:var(--shadow);max-width:calc(100% - 2rem);overflow-x:auto}.verlet-tools .verlet-chip{border-color:transparent;white-space:nowrap}.verlet-tools [aria-pressed=true]{background:var(--tool-active);color:var(--tool-active-ink)}.verlet-tool-status{position:absolute;top:4.8rem;left:calc(var(--panel-width) + 2rem);right:calc(var(--panel-width) + 2rem);text-align:center;font-size:.78rem;color:var(--ink-soft);z-index:3}.verlet-tool-status button{display:block;margin:.5rem auto}.verlet-tool-status button[hidden]{display:none}.verlet-motion{padding-top:.8rem;margin-top:1rem;border-top:1px solid var(--rule)}.verlet-motion h3{margin:0 0 .6rem;font-size:.85rem;font-weight:500}.verlet-motion label{display:flex;justify-content:space-between;gap:.4rem;align-items:center;font-size:var(--text-xs);margin:.4rem 0}.verlet-motion input{width:6.2rem;border:1px solid var(--control-rule);border-radius:.3rem;padding:.35rem;background:var(--paper);color:var(--ink)}.verlet-motion p{font-size:var(--text-xs);color:var(--ink-soft);line-height:1.5}.verlet-about{margin:0 0 1.5rem;font-size:.85rem;color:var(--ink-soft)}.verlet-about summary{cursor:pointer}.verlet-about .verlet-world-note{position:static;max-width:none;margin:1rem 0}.panels-hidden .verlet-panel{display:none}@media(max-width:70rem){.verlet-tagline{display:none}.verlet-bar{flex-wrap:wrap}.verlet-tool-status{left:1rem;right:1rem;top:4.8rem;pointer-events:none}.verlet-tool-status button{pointer-events:auto}.verlet-panel{--panel-top: 8.5rem;--panel-bottom-space: 17rem}}.verlet-panel--right .verlet-inspector__name{margin:0 0 .5rem}.verlet-panel--right .verlet-inspector__facts{font-size:var(--text-xs);margin-bottom:.6rem}.verlet-panel--right .verlet-field{gap:.3rem}.verlet-panel--right .verlet-field__hint{font-size:var(--text-xs);line-height:1.35}.verlet-panel--right .verlet-motion{margin-top:.6rem;padding-top:.6rem}@media(min-width:70rem){.verlet-panel--right{--panel-bottom-space: 7rem}}@media(min-width:70rem)and (max-width:75rem){.verlet-panel,.verlet-panel--right{--panel-bottom-space: 13.5rem}}.verlet-mobile-nav,.verlet-mobile-selection,.verlet-touch-hint{display:none}.verlet-mobile-dialog:not([open]){display:none}.verlet-mobile-dialog{box-sizing:border-box;position:fixed;inset:auto 0 var(--sheet-keyboard, 0px);margin:0 auto;width:min(100%,36rem);max-width:100%;max-height:min(76dvh,calc(var(--sheet-visible-height, 100dvh) - 16px));padding:0;border:1px solid var(--rule);border-bottom:0;border-radius:1.3rem 1.3rem 0 0;background:var(--surface);color:var(--ink);box-shadow:0 -12px 60px #0003;overflow:hidden}.verlet-mobile-dialog[open]{display:flex;flex-direction:column}.verlet-mobile-dialog::backdrop{background:#03091466}.verlet-mobile-dialog__head{position:relative;flex:none;display:flex;align-items:center;justify-content:space-between;padding:1.25rem 1rem .7rem;gap:1rem;border-bottom:1px solid var(--rule);touch-action:none;user-select:none}.verlet-mobile-dialog__head:before{content:"";position:absolute;width:2.5rem;height:4px;top:7px;left:calc(50% - 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var(--rule);border-radius:.65rem}.verlet-mobile-dialog [data-panels],.verlet-mobile-dialog .verlet-panel__title{display:none}.verlet-mobile-dialog .verlet-inspector__facts{font-size:.85rem}.verlet-mobile-dialog .verlet-motion input{width:8rem}.verlet-mobile-dialog .verlet-motion label{font-size:.85rem}.verlet-mobile-dialog .verlet-motion p,.verlet-mobile-dialog .verlet-field__hint{font-size:.8rem}.verlet-mobile-dialog .verlet-panel__actions{gap:.6rem}.verlet-mobile-dialog .verlet-panel__actions button{flex:1}.verlet-mobile-dialog .verlet-entity{min-height:56px;padding:.65rem;font-size:1rem;border-radius:.5rem}@media(max-width:60rem),(max-height:36rem){html,body{height:100%;overflow:hidden;overscroll-behavior:none}.verlet-app{height:100vh;height:100dvh;min-height:0;overflow:hidden}.verlet-bar{flex:none;gap:.3rem .5rem;padding:calc(.35rem + env(safe-area-inset-top)) max(.7rem,env(safe-area-inset-right)) .4rem max(.7rem,env(safe-area-inset-left));min-height:0;z-index:5}.verlet-bar__brand{font-size:.75rem}.verlet-tagline{display:none}.verlet-bar__end{margin-left:auto;flex-wrap:nowrap;gap:.4rem}.verlet-bar [data-scenarios]{order:3;width:100%}.verlet-bar [data-scenarios] .verlet-chips{flex-wrap:nowrap;width:max-content;gap:.25rem}.verlet-scenario{padding-inline:.8rem}.verlet-main{flex:1;min-height:0;height:auto;overflow:hidden}.verlet-world,.verlet-world__labels{position:absolute;inset:0;height:auto}.verlet-world canvas{touch-action:none}.verlet-main>.verlet-tools,.verlet-main>.verlet-panel{display:none}.verlet-main>.verlet-tool-status{display:none}button,.verlet-chip,.verlet-toggle{min-height:44px;touch-action:manipulation}input[type=number],input[type=text],input[type=date],input[type=time],select,textarea{font-size:16px;min-height:44px}input[type=range]{min-height:40px;touch-action:pan-y}.verlet-field 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button[aria-expanded=true]{background:var(--tool-active);color:var(--tool-active-ink);font-weight:700}[data-body-count]{font-size:var(--text-xs);color:var(--ink-soft)}.verlet-hud{position:absolute;left:max(.75rem,env(safe-area-inset-left));right:max(.75rem,env(safe-area-inset-right));bottom:calc(var(--mobile-nav-height) + env(safe-area-inset-bottom));z-index:3;width:auto;transform:none;margin:0;display:grid;grid-template-columns:5.6rem minmax(0,1fr);gap:.1rem .85rem;padding:.6rem .8rem}.verlet-hud [data-play]{grid-column:1;grid-row:1 / 3;min-height:52px;font-size:.78rem}.verlet-hud__readout{grid-column:2;grid-row:1;justify-content:space-between;font-size:var(--text-xs)}.verlet-hud__field{grid-column:2;grid-row:2;grid-template-columns:auto 1fr;font-size:var(--text-xs);gap:0 .4rem}.verlet-hud input[type=range]{width:100%;min-width:0;margin:0;height:30px;min-height:30px}.verlet-hud__field output{font-size:var(--text-xs)}.verlet-hud__hint,.verlet-hud__readout:has([data-drift]){display:none}.verlet-mobile-selection{position:absolute;display:flex;justify-content:space-between;gap:.5rem;z-index:2;left:max(.75rem,env(safe-area-inset-left));right:max(.75rem,env(safe-area-inset-right));bottom:calc(var(--mobile-nav-height) + 6rem + env(safe-area-inset-bottom))}.verlet-mobile-selection button{background:var(--surface);color:var(--ink);border:1px solid var(--rule);border-radius:2rem;padding:.5rem .85rem;font-size:.8rem}.verlet-mobile-selection [data-mobile-reframe]{width:44px;font-size:1.4rem;padding:0}.verlet-mobile-selection [data-mobile-pane]{max-width:calc(100% - 60px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.verlet-touch-hint{display:block;position:absolute;top:.6rem;left:1rem;right:1rem;text-align:center;color:var(--ink-soft);font-size:var(--text-xs);pointer-events:none;margin:0}.is-editing .verlet-mobile-nav,.is-editing .verlet-mobile-selection,.is-editing .verlet-touch-hint{display:none}.is-editing .verlet-hud{bottom:calc(.75rem + env(safe-area-inset-bottom))}.is-editing .verlet-tool-status{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:.5rem;pointer-events:auto;top:auto;left:.75rem;right:.75rem;bottom:calc(var(--mobile-nav-height) + 2.5rem + env(safe-area-inset-bottom));background:var(--surface);padding:.75rem;border:1px solid var(--rule);border-radius:.8rem;font-size:.8rem}.is-editing .verlet-tool-status span{flex-basis:100%}.is-editing .verlet-tool-status button{margin:0;flex:1}.is-editing [data-tool-confirm]{background:var(--accent);color:var(--paper)}.verlet-drawer{position:fixed;z-index:20;inset:0;width:100%;max-width:none;height:100dvh;overflow-y:auto;padding:env(safe-area-inset-top) max(1rem,env(safe-area-inset-right)) calc(2rem + env(safe-area-inset-bottom)) max(1rem,env(safe-area-inset-left));margin:0;border:0;background:var(--paper);overscroll-behavior:contain}.verlet-drawer__head{position:sticky;top:0;z-index:3;background:var(--paper);padding:.75rem 0;margin-bottom:1rem}.verlet-drawer__head h2{font-size:1.2rem}.verlet-drawer__lede{display:none}.verlet-drawer [data-drawer-close]{position:relative;white-space:nowrap}.verlet-drawer .verlet-header h3{font-size:1.6rem}.verlet-drawer [data-analyses]{gap:.75rem}.verlet-analysis-tab__badge{font-size:var(--text-xs)}.verlet-analysis{margin-top:1.5rem}}@media(max-width:60rem),(max-height:36rem){.verlet-main{background:radial-gradient(ellipse at 50% 42%,var(--scene-centre),var(--scene-middle) 45%,var(--scene-edge) 85%)}.verlet-world,.verlet-world__labels{inset:1.8rem 0 calc(var(--mobile-controls-space) + env(safe-area-inset-bottom))}.verlet-world{background:transparent}.is-editing .verlet-world,.is-editing .verlet-world__labels{inset:0 0 calc(var(--mobile-controls-space) + 1.5rem + env(safe-area-inset-bottom))}}@media(max-height:30rem)and (orientation:landscape){.verlet-bar [data-scenarios]{order:0;width:auto;flex:1}.verlet-mobile-nav{left:auto;width:18rem;border:0;border-radius:.8rem;bottom:.4rem;right:env(safe-area-inset-right);grid-template-columns:repeat(3,minmax(0,1fr))}.verlet-mobile-nav button{font-size:.75rem;gap:.25rem}.verlet-mobile-nav button>span[aria-hidden]{font-size:1rem}.verlet-hud{right:calc(18.5rem + env(safe-area-inset-right));bottom:calc(.75rem + env(safe-area-inset-bottom))}.verlet-mobile-selection{display:none}.verlet-mobile-dialog{max-height:calc(var(--sheet-visible-height, 100dvh) - 8px)}.verlet-world,.verlet-world__labels{inset:1.8rem 0 calc(6.5rem + env(safe-area-inset-bottom))}.is-editing .verlet-hud{display:none}.is-editing .verlet-tool-status{left:auto;right:.75rem;bottom:calc(.75rem + env(safe-area-inset-bottom));width:14rem}.is-editing .verlet-world,.is-editing .verlet-world__labels{inset:0 15.5rem 0 0}}.verlet-mobile-speed{display:none}@media(max-width:60rem),(max-height:36rem){.verlet-hud [data-speed-readout]{display:none}.verlet-hud .verlet-mobile-speed{display:block}}@media(max-height:30rem)and (max-width:40rem)and (orientation:landscape){html,body{height:auto;overflow:auto}.verlet-app{height:auto;min-height:100dvh;overflow:visible}.verlet-bar [data-scenarios]{order:3;width:100%;flex:none}.verlet-main{flex:none;display:flex;flex-direction:column;height:auto;overflow:visible}.verlet-world{position:relative;inset:auto;flex:none;height:8rem}.verlet-world__labels{position:absolute;inset:0 0 auto;height:8rem}.verlet-hud{position:static;width:auto;margin:var(--space-2) var(--space-3);gap:.1rem .5rem;padding:var(--space-2);grid-template-columns:5rem minmax(0,1fr)}.verlet-hud__readout span{position:absolute;width:1px;height:1px;clip-path:inset(50%);overflow:hidden}.verlet-hud__readout{justify-content:flex-end}.verlet-mobile-nav{position:static;width:auto;margin:0;border-radius:0}.verlet-touch-hint{display:none}.is-editing .verlet-world{position:relative;inset:auto}.is-editing .verlet-world__labels{inset:0 0 auto}.is-editing .verlet-tool-status{position:static;width:auto;margin:var(--space-2) var(--space-3)}}