@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=IBM+Plex+Mono:wght@400;500&family=Instrument+Serif:ital@0;1&display=swap');
:root{--bg:#10151e;--panel:#151c26;--plot:#0c121b;--line:#2a323e;--text:#f1f2ed;--muted:#a3adba;--mint:#b7eacb;--mono:'IBM Plex Mono',monospace;--body:'DM Sans',sans-serif;--serif:'Instrument Serif',Georgia,serif;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--body);font-size:16px}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{color:inherit;cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--mint);outline-offset:5px}button{border:0;background:none}button:hover,a:hover{color:var(--mint)}.topbar{min-height:90px;margin:0 3.3%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.brand{font-size:27px;font-weight:550;letter-spacing:-1px;display:flex;align-items:center;gap:12px}.brand-mark{font-size:48px;line-height:1;color:var(--mint)}.brand-caption{font:12px var(--mono);letter-spacing:1.5px;max-width:155px;line-height:1.7;margin-left:18px;border-left:1px solid var(--line);padding-left:22px}.top-links{display:flex;align-items:center;gap:36px;font-size:14px}.top-links a span{font:12px var(--mono);color:var(--mint);margin-left:5px}main{max-width:1700px;margin:auto;padding:0 3.3%}.intro{display:flex;justify-content:space-between;align-items:center;padding:42px 0 35px}.eyebrow{font:12px var(--mono);letter-spacing:1.6px;color:var(--muted)}h1{font-size:48px;font-family:var(--serif);font-weight:400;letter-spacing:-.8px;margin:13px 0 12px}h1 em{color:var(--mint);font-weight:400}.intro p{color:var(--muted);margin:0;font-size:15px}.intro-note{display:flex;align-items:center;gap:18px;font-size:13px;color:var(--muted);line-height:1.7}.orbit-symbol{font-size:54px;color:#7f9d9d;font-weight:300}.workspace{display:grid;grid-template-columns:205px minmax(0,1fr) 286px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--panel)}.library{border-right:1px solid var(--line);padding:25px 12px;display:flex;flex-direction:column}.library-heading{display:flex;justify-content:space-between;align-items:center;font:12px var(--mono);letter-spacing:1.2px;color:var(--muted);padding:0 12px 22px}.library-heading span{border:1px solid var(--line);padding:3px 5px;border-radius:4px}.nav-group{margin:13px 12px 12px;color:#8e9ba9;font:12px var(--mono);letter-spacing:1.25px}.study{display:flex;align-items:center;width:100%;gap:12px;text-align:left;padding:12px 12px;border-radius:6px;font-size:13px;margin-bottom:2px;transition:background .15s}.study .glyph{width:18px;color:#9aa8b7;font-size:17px}.study.active{background:#2a383b;color:#d4f5df}.study.active .glyph{color:var(--mint)}.study:hover{background:#222d38}.study .nav-arrow{margin-left:auto}.library-foot{margin-top:auto;padding:25px 12px 0;font-size:12px;line-height:1.7;color:#8e9ba9}.library-foot em{font-family:var(--serif);font-size:17px}.experiment{min-width:0}.plot-heading{display:flex;align-items:center;justify-content:space-between;padding:25px 28px 21px}.plot-heading .eyebrow{font-size:12px}h2{font:36px var(--serif);margin:7px 0 0}.icon-button{font-size:23px;line-height:1;width:34px;height:34px;border-radius:6px}.icon-button:hover{background:#26323c}.canvas-wrap{height:435px;position:relative;background:radial-gradient(ellipse at 50% 45%,#141d2a 0%,#0b111a 72%);overflow:hidden}canvas{display:block;width:100%;height:100%}.plot-badge{position:absolute;left:22px;top:20px;display:flex;align-items:center;gap:7px;font:12px var(--mono);letter-spacing:1.3px;color:#95a3b3;pointer-events:none}.plot-badge>span:first-child{width:5px;height:5px;border-radius:50%;background:var(--mint)}.axis-label{position:absolute;bottom:17px;left:0;right:0;text-align:center;color:#8290a3;font:12px var(--mono);pointer-events:none}.transport{padding:15px 22px;display:flex;align-items:center;gap:14px;border-bottom:1px solid var(--line);height:66px}.play-button{background:var(--mint);color:#10291c!important;border-radius:50%;width:34px;height:34px;flex-shrink:0;font-size:15px;font-weight:600}.transport input{min-width:20px;flex:1}.timeline-label{font-size:12px;color:var(--muted)}input[type=range]{accent-color:var(--mint);height:4px;cursor:pointer}output{font:12px var(--mono);white-space:nowrap}.transport select{background:#202934;color:var(--text);border:1px solid var(--line);padding:5px;border-radius:5px;font:12px var(--mono)}.parameters{padding:24px;display:flex;gap:28px;flex-wrap:wrap}.parameter{flex:1;min-width:130px}.parameter label{display:flex;justify-content:space-between;margin-bottom:17px;font-size:12px;color:var(--muted)}.parameter output{color:var(--text)}.parameter input{width:100%;margin:0}.palette-control>span{display:block;font-size:12px;color:var(--muted);margin-bottom:12px}.palettes{display:flex;gap:8px}.palette{width:21px;height:21px;border-radius:50%;background:linear-gradient(135deg,#4ae2c1,#a183f6,#f0b478);border:2px solid var(--panel);outline:1px solid transparent}.palette.active{outline-color:#e4ede9}.palette.sunset{background:linear-gradient(135deg,#fa575f,#fdaa6b,#ffe0a0)}.palette.ocean{background:linear-gradient(135deg,#3275f9,#59d7ec,#c0fff1)}.statline{border-top:1px solid var(--line);padding:15px 24px;display:flex;justify-content:space-between;gap:14px;color:#8997a8;font:12px var(--mono);line-height:1.7}.explanation{padding:29px 25px;border-left:1px solid var(--line)}.explanation .eyebrow{font-size:12px}h3{font:30px var(--serif);font-weight:400;margin:15px 0}.explanation p{font-size:14px;line-height:1.75;color:#b7c0cc;margin:0}.formula{margin:23px 0;padding:17px;background:#1e2934;border:1px solid #33434a;border-radius:7px}.formula>span{font:12px var(--mono);letter-spacing:1.4px;color:var(--mint)}.formula>div{font:16px var(--serif);margin-top:12px;line-height:1.6;overflow-wrap:anywhere}h4{font-size:13px;font-weight:550;margin:0 0 12px}.how ol{list-style:none;counter-reset:steps;padding:0;margin:0}.how li{counter-increment:steps;color:#aeb9c8;font-size:13px;line-height:1.7;padding-left:28px;position:relative;margin-bottom:12px}.how li:before{content:counter(steps);position:absolute;left:0;top:2px;color:#8fafaa;font:12px var(--mono);border:1px solid #3b4c51;border-radius:50%;width:17px;height:17px;text-align:center;line-height:17px}.try{display:flex;gap:12px;margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}.try>span{color:var(--mint)}.try h4{color:var(--mint);margin-bottom:7px}.try p{font-size:13px}.caveat{font-size:12px;color:#94a1b0;line-height:1.65;margin:18px 0}.source{font-size:12px;color:#c5d9ce;text-decoration:underline;text-underline-offset:4px;display:inline-block;line-height:1.7}.related-section{padding:38px 0}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:22px}.section-heading h3{font-size:29px;margin:12px 0 0}.section-heading>span{font:12px var(--mono);color:var(--muted);letter-spacing:1px}.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.related-card{text-align:left;padding:0;background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden}.related-card canvas{height:145px;background:#0c131d}.card-info{padding:15px 17px 17px}.card-info>div{display:flex;justify-content:space-between;align-items:center}.card-info h4{font-size:15px;margin:0}.card-info p{font-size:12px;color:var(--muted);margin:6px 0 0}footer{padding:23px 0 33px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#8f9dac;gap:20px}.footer-brand{color:#d8e5dc;font-size:20px}dialog{max-width:530px;padding:38px;border:1px solid #42534e;border-radius:14px;background:#17212b;color:var(--text);box-shadow:0 30px 150px #0009}dialog::backdrop{background:#030810aa;backdrop-filter:blur(7px)}dialog p{line-height:1.8;color:var(--muted);font-size:15px}.close-dialog{float:right;font-size:26px}.dialog-done{padding:12px 20px;background:var(--mint);color:#13291d;border-radius:7px;margin-top:8px}#hover-tip{position:absolute;pointer-events:none;background:#22323eee;border:1px solid #63797b;border-radius:5px;padding:8px;font:12px var(--mono);z-index:2}.experiment:fullscreen{background:var(--bg);display:flex;flex-direction:column}.experiment:fullscreen .canvas-wrap{flex:1;height:auto}.experiment:fullscreen .plot-heading{padding:18px 28px}.experiment:fullscreen .statline{display:none}[hidden]{display:none!important}@media(min-width:1500px){.workspace{grid-template-columns:220px minmax(0,1fr) 310px}.canvas-wrap{height:500px}.study{padding:12px 12px;font-size:14px}}@media(max-width:1150px){.workspace{grid-template-columns:175px minmax(0,1fr)}.explanation{grid-column:1/-1;border-left:0;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;column-gap:32px}.explanation>.eyebrow,.explanation>h3{grid-column:1}.explanation>h3{margin:12px 0}.explanation>#why{grid-column:1}.explanation>.formula{grid-column:1}.explanation>.how{grid-column:2;grid-row:1/5}.explanation>.try{grid-column:2;grid-row:5/8;margin-top:0}.explanation>.caveat,.explanation>.source{grid-column:1}.library-foot{display:none}.canvas-wrap{height:490px}.intro-note{display:none}.study{font-size:12px;padding:8px}.nav-group{margin-left:8px}.related-card canvas{height:125px}.topbar{min-height:78px}}@media(max-width:700px){main{padding:0 18px}.topbar{margin:0 18px;min-height:74px}.brand{font-size:24px}.brand-caption,.top-links>a{display:none}.top-links{gap:12px}.top-links button{font-size:12px}.intro{padding:29px 0}.intro .eyebrow{font-size:12px;letter-spacing:1px}h1{font-size:37px;margin:12px 0}.intro p{font-size:13px;line-height:1.6;max-width:280px}.workspace{display:flex;flex-direction:column;border-radius:12px}.library{border-right:0;border-bottom:1px solid var(--line);padding:14px 12px}.library-heading{padding:0 4px 12px;font-size:12px}.library nav{display:flex;gap:7px;overflow-x:auto;padding-bottom:5px}.nav-group{display:none}.study{flex:0 0 auto;width:auto;white-space:nowrap;padding:12px 12px;background:#1c2633;font-size:12px;margin:0}.study .nav-arrow{display:none}.plot-heading{padding:21px}.canvas-wrap{height:360px}.plot-heading h2{font-size:31px}.explanation{display:block;padding:25px 23px}.explanation p{font-size:15px}.explanation>.try{margin:20px 0}.parameters{padding:23px;gap:23px}.transport{padding:14px;gap:12px}.timeline-label{display:none}.statline{padding:12px 20px;flex-wrap:wrap;font-size:12px}.related-grid{grid-template-columns:1fr 1fr;gap:12px}.related-card canvas{height:130px}.card-info{padding:12px}.card-info h4{font-size:13px}.card-info p{font-size:12px}.section-heading>span{display:none}.section-heading h3{font-size:27px}.section-heading .eyebrow{font-size:12px}footer{flex-wrap:wrap;gap:12px}footer p{width:100%;order:3;margin:0;line-height:1.7}dialog{margin:auto 20px;padding:25px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

@media(min-width:701px){.library nav{max-height:612px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#40535a transparent}.library-foot{padding-top:19px}}

.explanation p{font-size:16px}.study,.parameter label,.palette-control>span{font-size:14px}.experiment{display:flex;flex-direction:column}.canvas-wrap{flex:1;min-height:435px}.transport,.parameters,.statline{flex-shrink:0}@media(max-width:700px){.canvas-wrap{flex:none;min-height:360px;height:360px}.study{font-size:14px}.explanation p{font-size:16px}}
.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}.study-search{width:100%;min-width:0;border:1px solid #34404d;border-radius:6px;background:#0e1721;padding:11px 10px;font-size:13px;color:var(--text);margin-bottom:15px}.study-search::placeholder{color:#95a4b5}.empty-search{padding:14px;color:var(--muted);font-size:14px;line-height:1.7}.gallery-toolbar{display:flex;gap:15px;margin-bottom:22px}.gallery-toolbar input,.gallery-toolbar select{background:#19232f;border:1px solid #364350;border-radius:7px;padding:14px 16px;font:14px var(--body);color:var(--text);min-width:0}.gallery-toolbar input{flex:1}.gallery-toolbar input::placeholder{color:#9cabbc}.gallery-toolbar select{min-width:200px}.gallery-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:25px;color:var(--muted);font:12px var(--mono)}.gallery-bottom button{padding:12px 18px;border:1px solid #465957;border-radius:7px;color:var(--mint);font:14px var(--body)}.gallery-bottom button:hover{background:#273d39}.related-card{transition:border-color .2s,transform .2s}.related-card:hover{border-color:#718d86;transform:translateY(-3px)}.related-card canvas{height:175px}.card-description{margin-top:13px;font-size:13px;color:#c3cdd8;line-height:1.6}.plot-tools{position:absolute;right:15px;top:15px;display:flex;align-items:center;gap:4px;background:#101c2bd9;border:1px solid #344358;border-radius:6px;padding:3px}.plot-tools button{width:25px;height:25px;font-size:18px}.plot-tools output{width:28px;text-align:center;font-size:11px}.plot-badge{max-width:calc(100% - 172px);line-height:1.6}.axis-label{padding:0 20px;line-height:1.5}.canvas-wrap{touch-action:pan-y}#hover-tip{max-width:200px;line-height:1.5;overflow-wrap:anywhere}.study>span:nth-child(2){line-height:1.5}.experiment.expanded{position:fixed;inset:0;z-index:10;background:var(--bg);overflow:auto;border:0}.experiment.expanded .canvas-wrap{min-height:0}.expanded .plot-heading{padding:14px 25px}.expanded .statline{display:none}.expanded .parameters{padding:16px 24px}body:has(.experiment.expanded){overflow:hidden}@media(min-width:701px){.library nav{max-height:610px}.library-heading{padding-bottom:16px}.library{padding-left:10px;padding-right:10px}.study{padding:10px;font-size:13px}}@media(max-width:700px){.gallery-toolbar{flex-direction:column}.gallery-toolbar input,.gallery-toolbar select{width:100%;font-size:14px}.related-card canvas{height:138px}.card-info h4{font-size:14px;line-height:1.4}.card-info p{font-size:12px}.card-description{font-size:12px}.gallery-bottom{gap:12px}.gallery-bottom button{font-size:12px}.gallery-bottom>span{font-size:11px}.plot-badge{font-size:10px;max-width:calc(100% - 160px);left:15px}.plot-tools{right:10px;top:13px}.plot-tools button{width:23px}.study-search{margin-bottom:12px;font-size:14px}.related-grid{gap:12px}.section-heading h3{font-size:29px}.canvas-wrap{min-height:360px}.axis-label{font-size:11px}}
#preset-choice{width:100%;background:#1c2a38;border:1px solid #405366;color:var(--text);border-radius:6px;padding:8px 10px;font-size:13px;min-width:0}.parameter:has(#preset-choice:not([hidden])){min-width:180px}
@media(min-width:701px){.canvas-wrap{flex:none;height:500px;min-height:500px}.explanation{max-height:850px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#40535a transparent}.experiment.expanded .canvas-wrap{flex:1;height:auto;min-height:220px}}.source{display:block;margin-top:15px}.parameters{align-items:start}.parameter{min-width:0}.parameter label{gap:12px} [hidden]{display:none!important}
@media(max-width:700px){.experiment.expanded .canvas-wrap{flex:1;height:auto;min-height:260px}}