/* Original experiment retained; typography, vector notation and return link only. */
.formula,.equation,.inequality,.metric strong,.averages strong,.averages small,.vector,.instant strong,.instant p,.clock,.settings strong,#scene text,#chart text{font-family:Consolas,"Liberation Mono",monospace!important;font-variant-numeric:tabular-nums}
.brand{letter-spacing:0;font-size:14px}.brand .light{font-size:11px}@media(max-width:420px){header .badge{display:none}}

/* Vector arrows are SVG strokes, independent of combining-glyph font support. */
body .math-vector{display:inline-block;position:relative;font-family:inherit;font-size:inherit;font-weight:inherit;font-style:normal;line-height:1;padding:0;margin:0;color:inherit;vertical-align:baseline;white-space:nowrap}
.math-vector svg{position:absolute;display:block;left:-.05em;top:-.36em;width:.75em;height:.3em;overflow:visible;fill:none;stroke:currentColor;stroke-width:1.2;stroke-linecap:round;stroke-linejoin:round}
.legend .legend-label{display:inline}

/* Theme colors also drive all SVG labels, lines and arrowheads. */
:root{color-scheme:light;--surface:#fff;--header:#fafbf7;--inset:#f3f5ef;--scene:#f5f8f5;--soft-green:#edf6ed;--soft-orange:#fcf3e9;--soft-blue:#edf3fb;--soft-note:#f2f6ef;--hint:#876137;--hint-line:#d1ad71;--note-line:#95ae8f;--focus:#3569b6;--shadow:#203d3520;--path:#b65c27;--axis:#899d96;--track:#b8c8c3;--grid:#dfe6e4;--selected-text:#fff;--button-text:#fff}
:root[data-theme=dark]{color-scheme:dark;--bg:#0d1729;--ink:#f1f4fc;--muted:#b1bfd4;--line:#2b405e;--green:#8ed1bd;--orange:#f0b28b;--blue:#8abaff;--surface:#142238;--header:#101d31;--inset:#18283f;--scene:#101d31;--soft-green:#19362f;--soft-orange:#342b29;--soft-blue:#1a2d49;--soft-note:#1a302d;--hint:#e1c296;--hint-line:#8d7657;--note-line:#73ab96;--focus:#8abaff;--shadow:#0004;--path:#f0b28b;--axis:#617793;--track:#647b99;--grid:#283b55;--selected-text:#10203b;--button-text:#10203b}
header{height:auto;min-height:78px;gap:16px;flex-wrap:wrap;padding-top:14px;padding-bottom:14px}
header .badge{margin-left:auto}
.theme-switch{display:flex;gap:2px;padding:3px;border:1px solid var(--line);border-radius:24px}
.theme-switch button{border:0;border-radius:20px;padding:8px 11px;background:transparent;color:var(--muted);font-size:11px;min-height:34px}
.theme-switch button[aria-pressed=true]{background:var(--inset);color:var(--ink);box-shadow:inset 0 0 0 1px var(--line)}
@media(max-width:620px){header{gap:12px}header .badge{display:none}.theme-switch{margin-left:auto}}
@media(max-width:380px){header .brand .light{display:none}.theme-switch button{padding:7px 9px}}

.learning-section{margin-top:24px;padding:26px;border:1px solid var(--line);border-radius:15px;background:var(--surface)}
.learning-intro{display:flex;justify-content:space-between;align-items:center;gap:20px}
.learning-intro h2{margin:0 0 8px}.learning-intro p,.learning-steps p{font-size:13px;line-height:1.7;color:var(--muted);margin:0}
.learning-intro button{flex-shrink:0}.learning-content{padding-top:25px;margin-top:25px;border-top:1px solid var(--line)}
.learning-content[hidden]{display:none}.learning-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:25px}
.learning-steps h3{font-size:15px;margin:10px 0}.step-number{font:13px Consolas,monospace;color:var(--blue)}
@media(max-width:720px){.learning-intro{align-items:flex-start;flex-direction:column}.learning-steps{grid-template-columns:1fr}.learning-section{padding:20px}}

.language-switch{display:flex;gap:3px;align-items:center;font:12px 'Segoe UI',Arial,sans-serif}.language-switch a{padding:6px 8px;text-decoration:none;color:var(--muted);border:1px solid transparent;border-radius:7px}.language-switch a[aria-current=page]{color:var(--blue);border-color:var(--line);background:var(--inset)}.formula-line{font-size:15px;line-height:2.1}.formula{overflow-x:auto}.reference-section{margin-top:24px;padding:25px;border:1px solid var(--line);border-radius:15px;background:var(--surface)}.reference-section h2{font-size:20px}.reference-section p,.reference-section li{font-size:12px;line-height:1.8;color:var(--muted)}.reference-section li{margin:12px 0}.reference-section cite{font-style:normal;color:var(--ink)}.reference-section a{color:var(--blue)}.reference-section ol{padding-left:20px}.theory .inequality{font-size:clamp(16px,2vw,22px)!important}header .brand .light{display:none}@media(max-width:620px){header .language-switch{margin-left:auto}header .theme-switch{margin-left:0}}

/* Readable mathematics and responsive controls. */
body{font-size:17px}.intro p{font-size:18px}.brand{font-size:18px}.eyebrow,.badge{font-size:12px}.theme-switch button{font-size:14px;min-height:44px}.language-switch{font-size:14px}.language-switch a{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px}.tabs{flex-wrap:wrap}.tabs button{min-height:48px;flex-basis:120px}.tabs button span{font-size:16px}.primary,.textbutton{font-size:16px;min-height:44px}.iconbutton{min-height:44px;min-width:44px}.legend{font-size:14px}.legend label{min-height:44px}.legend input{width:18px;height:18px}.metric>div,.metric p,.averages span,.vector,.instant>div,.instant p,.instant>small,.insight,.settings label,.settings small,.chartpanel>small,.rangelabel{font-size:15px}.averages strong{font-size:26px;white-space:normal}.averages small{font-size:15px}.instant strong{font-size:21px}.theory p,.learning-intro p,.learning-steps p,.reference-section p,.reference-section li{font-size:17px;line-height:1.8}h2,.lower h2,.reference-section h2{font-size:23px}.status{font-size:14px}.clock small{font-size:15px}.settings{grid-template-columns:1fr;gap:8px}.settings label{max-width:310px}.settings small{grid-column:1/-1}input[type=range]{min-height:44px}.paneltop{flex-wrap:wrap}.workspace{grid-template-columns:minmax(0,1.5fr) minmax(330px,1fr)}.lower{grid-template-columns:minmax(0,1fr)}.math-display{display:flex;align-items:center;justify-content:center;min-width:0;padding:20px 16px;margin:0;background:var(--inset);color:var(--blue);border-radius:10px}.math-equation{display:block;max-width:100%;height:auto;overflow:visible}.formula-grid{display:flex;flex-wrap:wrap;gap:14px;margin:22px 0}.formula-grid>.math-display{flex:1 1 200px}.formula-grid>[data-equation-route]{display:flex;flex-wrap:wrap;gap:14px;min-width:0}.formula-grid>[data-equation-route][hidden]{display:none}.model-assumptions{border-top:1px solid var(--line);margin-top:26px;padding-top:20px}.model-assumptions h3{font-size:21px;margin:0 0 16px}footer{font-size:13px;flex-wrap:wrap}.reference-section li{overflow-wrap:anywhere}
@media(max-width:1000px){.workspace{grid-template-columns:minmax(0,1fr)}.measurements .averages strong{font-size:28px}}
@media(max-width:600px){main{padding:24px 14px 0}header{height:auto;min-height:78px;justify-content:center;padding:18px 16px;gap:12px}header .theme-switch,header .language-switch{margin-left:0}.experiment,.measurements,.chartpanel,.theory{padding:18px 14px}.tabs button span{font-size:15px}.legend{font-size:14px}.transport{flex-wrap:wrap}.clock{font-size:22px}.rangelabel{font-size:13px;gap:10px;flex-wrap:wrap}.theory p{font-size:17px}.formula-grid{display:grid;grid-template-columns:minmax(0,1fr)}.formula-grid>[data-equation-route]{display:block}.math-display{padding:20px 10px;margin-bottom:10px}.question>span{font-size:12px}}
.plot-scroll{max-width:100%;overflow-x:auto;border-radius:8px}.plot-scroll>svg{display:block;width:100%;min-width:620px;max-width:none}.plot-scroll:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
/* Standard: animation left, evolving plot right, horizontal readings under motion. */
.standard-workspace{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:20px;align-items:start}.standard-left{min-width:0}.standard-left .measurements{margin-top:16px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.standard-left .measurements>.eyebrow,.standard-left .measurements>h2,.standard-left .measurements>.averages,.standard-left .measurements>.vector,.standard-left .measurements>.instant,.standard-left .measurements>.insight{grid-column:1/-1}.standard-left .measurements>h2{margin:0}.standard-left .metric{margin:0;padding:12px}.standard-left .metric strong{font-size:28px}.standard-left .averages{margin:4px 0}.standard-left .instant{display:grid;grid-template-columns:1fr 1fr;gap:5px 12px}.standard-left .instant>.eyebrow,.standard-left .instant>small{grid-column:1/-1}.standard-left .instant>div{margin:0;gap:10px}.standard-workspace .chartpanel .paneltop{align-items:start}.standard-workspace .plot-scroll>svg{min-width:0}.standard-workspace[data-expanded=true]{grid-template-columns:minmax(0,1fr) minmax(0,1.5fr)}.standard-workspace[data-expanded=true] #chart text{font-size:15px}.standard-left .scene{max-width:100%}.lower{display:block}.lower .theory{margin-top:20px}
@media(max-width:900px){.standard-workspace,.standard-workspace[data-expanded=true]{grid-template-columns:minmax(0,1fr)}.standard-left .measurements{grid-template-columns:repeat(2,minmax(0,1fr))}.standard-workspace[data-expanded=true] .plot-scroll>svg{min-width:620px}}
@media(max-width:420px){.standard-left .metric strong{font-size:23px}.standard-left .metric>div{flex-wrap:wrap}.standard-left .instant{grid-template-columns:1fr}}