:root{color-scheme:dark;--bg:#07111f;--panel:#0b1929;--line:#223547;--text:#dbe7f3;--muted:#91a6ba;--cyan:#65d9ec;--orange:#ffb578;--purple:#bf9bff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:var(--cyan);text-decoration:none}a:hover{text-decoration:underline}header{height:75px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 4.5vw;font-size:11px;letter-spacing:1.5px}header a{color:var(--text)}header a span{color:var(--muted);margin-left:15px}.tag{border:1px solid #31515c;color:#a2c6ce;padding:3px 10px;border-radius:4px;white-space:nowrap}main{max-width:1600px;padding:42px 4.5vw 24px;margin:auto}.intro{display:flex;justify-content:space-between;align-items:center;gap:24px}.eyebrow{font-size:10px;font-weight:650;letter-spacing:1.8px;color:var(--cyan);margin:0 0 10px}h1{font-size:clamp(30px,3.5vw,52px);font-weight:550;letter-spacing:-1.9px;line-height:1.12;margin:8px 0 18px}h2{font-size:19px;line-height:1.3;font-weight:550;margin:4px 0}h3{font-weight:550;font-size:15px;line-height:1.4;margin:0 0 10px}.lede{color:#a9bdce;font-size:17px;line-height:1.6;margin:0}.reference{text-align:right;color:var(--muted);font-size:12px;line-height:2}.reference strong{font-size:17px;color:var(--text);font-weight:500}.reference span{font-size:11px}.facts{display:grid;grid-template-columns:repeat(4,1fr);margin:32px 0 26px;border:1px solid var(--line);border-radius:10px;background:#0a1726}.facts>div{padding:16px 24px;border-right:1px solid var(--line)}.facts>div:last-child{border:0}.facts span{display:block;color:var(--muted);font-size:11px}.facts strong{display:block;font-size:23px;font-weight:450;letter-spacing:-.5px}.facts small{font-size:14px;color:var(--muted);font-weight:400}.cyan{color:var(--cyan)}.orange{color:var(--orange)}.purple{color:var(--purple)}.muted{color:var(--muted)}.small{font-size:11px}.laboratory{display:grid;grid-template-columns:minmax(0,1fr) 302px;gap:18px;align-items:start}.scene-panel,.controls,.plot-card{border:1px solid var(--line);border-radius:12px;background:var(--panel);overflow:hidden}.panel-head{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:19px 22px;border-bottom:1px solid var(--line)}.panel-head .eyebrow{font-size:9px}.panel-head h2{font-size:16px}.live{font-size:8px;letter-spacing:1px;color:var(--muted);white-space:nowrap}.live i{display:inline-block;background:var(--cyan);width:5px;height:5px;border-radius:50%;margin-right:4px}.scene-wrap{position:relative;background:radial-gradient(ellipse at 45% 30%,#142b40 0,#081422 65%)}#scene{display:block;width:100%;height:485px;touch-action:none;cursor:grab}#scene:active{cursor:grabbing}.scene-caption{position:absolute;bottom:13px;left:18px;color:#8da8bd;font-size:10px;pointer-events:none}#scene-scale{position:absolute;left:18px;top:13px;font-size:10px;color:var(--muted);pointer-events:none}.scene-toolbar{display:flex;gap:7px;flex-wrap:wrap;padding:14px 18px;border-top:1px solid var(--line);align-items:center}button,select{font:inherit;border:1px solid #2c4458;color:var(--text);border-radius:6px;background:#122539;min-height:33px;padding:5px 11px;cursor:pointer}button:hover{background:#1b354b;border-color:#4a748c}button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,canvas:focus-visible,a:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}button.selected{color:var(--cyan);border-color:#3a7382;background:#153541}.scene-toolbar button{font-size:10px;padding:4px 8px}.scene-toolbar label{font-size:10px;color:var(--muted);white-space:nowrap}.legend{display:flex;flex-wrap:wrap;gap:15px;padding:0 18px 15px;font-size:10px;color:#b7c7d7}.controls .panel-head{padding:18px 17px}.controls h2{font-size:15px}.text-button{border:0;background:none;padding:0;color:var(--cyan);font-size:11px}.control{display:block;margin:15px 17px;font-size:11px;color:#b8cad8}.control .row{display:flex;justify-content:space-between;gap:12px}.control output{font-variant-numeric:tabular-nums;color:var(--text)}.control select{width:100%;font-size:12px;margin-top:7px}input[type=range]{display:block;width:100%;height:17px;accent-color:var(--cyan);margin:8px 0 0;cursor:pointer}input[type=checkbox]{accent-color:var(--cyan);vertical-align:middle}.controls details{border-top:1px solid var(--line);padding-top:10px;margin-top:15px}.controls summary{font-size:11px;color:var(--cyan);margin:0 17px;cursor:pointer}.controls .small{margin:15px 17px}.derived{margin:15px 17px;padding-top:12px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}.derived p{margin:3px 0}.derived strong{font-weight:500;color:var(--text)}.transport{display:flex;gap:22px;align-items:center;padding:18px 22px;border:1px solid var(--line);border-radius:10px;background:#0b1929;margin-top:18px}.transport label{font-size:11px;color:var(--muted)}.transport .phase{flex:1}.phase output{float:right;color:var(--text);font-variant-numeric:tabular-nums}.transport select{display:block;font-size:11px;min-height:29px;padding:2px 8px}.transport button{font-size:12px}.primary{color:#04131b;background:var(--cyan);border-color:var(--cyan);min-width:74px;font-weight:650}.primary:hover{background:#a6eeff;color:#04131b}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:36px 0 20px}.section-heading p:not(.eyebrow){color:var(--muted);font-size:12px;margin:8px 0 0}.section-heading>label{font-size:11px;white-space:nowrap}.chart-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px}.plot-card{padding:18px 20px}.plot-title{display:flex;align-items:baseline;justify-content:space-between;gap:15px}.plot-title>span{font-size:8px;letter-spacing:1.4px;color:var(--muted)}h3 span{color:var(--muted);font-size:11px;font-weight:400;margin-left:8px}.plot-card canvas{display:block;width:100%;height:270px}.plot-card.time canvas{height:145px}.plot-card.time{padding-bottom:10px}.metrics{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:10px;color:var(--muted);border-top:1px solid var(--line);padding-top:10px}.metrics strong{color:var(--text);font-weight:500}.plot-note{font-size:11px;color:var(--muted);max-width:1000px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin:24px 0 28px}.steps article{border-top:1px solid var(--line);padding-top:17px}.steps b{font:12px monospace;color:var(--cyan);display:block;margin-bottom:12px}.steps p,.method p{font-size:12px;line-height:1.8;color:#a9bdce}.method{border:1px solid var(--line);border-radius:9px;background:#0a1726;padding:17px 22px;margin-bottom:14px}.method summary{cursor:pointer;font-size:13px;color:var(--text)}.method-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-top:22px}.equation{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;color:#d4e7ee!important;border-left:2px solid #3e7588;padding:8px 15px;background:#0e2030;overflow-wrap:anywhere}.method h3{margin:20px 0 8px;font-size:13px}.table-scroll{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:12px;text-align:left;margin:20px 0}th,td{padding:10px;border-bottom:1px solid var(--line)}th{color:var(--cyan)}td{color:#b4c6d6}.callout{color:var(--orange)!important}footer{border-top:1px solid var(--line);padding-top:15px;margin-top:32px;color:var(--muted);font-size:10px}#download{font-size:11px}noscript{display:block;padding:24px;color:var(--orange)}@media(min-width:1450px){#scene{height:530px}.laboratory{grid-template-columns:minmax(0,1fr) 320px}}@media(max-width:1050px){main{padding:28px 24px}.laboratory{grid-template-columns:minmax(0,1fr) 270px}.panel-head{padding:16px}.live{display:none}.facts>div{padding:15px}.section-heading{align-items:start;flex-direction:column;gap:10px}#scene{height:460px}.scene-toolbar{gap:8px}.reference{max-width:230px}}@media(max-width:760px){header{padding:0 20px;height:62px}header a span{display:none}.intro{display:block}.reference{text-align:left;margin-top:20px;max-width:none}.reference br:first-of-type{display:none}.reference strong{font-size:13px;margin-left:8px}.facts{grid-template-columns:1fr 1fr}.facts>div:nth-child(2){border-right:0}.facts>div:nth-child(-n+2){border-bottom:1px solid var(--line)}.facts strong{font-size:21px}.laboratory{grid-template-columns:1fr}.controls{padding-bottom:5px}#controls{display:grid;grid-template-columns:1fr 1fr}#scene{height:420px}.transport{gap:12px;padding:15px;flex-wrap:wrap}.transport .phase{flex-basis:60%}.chart-grid,.steps,.method-grid{grid-template-columns:1fr}.plot-card canvas{height:300px}h1{letter-spacing:-1px}.steps{gap:12px}.method{padding:15px}.plot-title h3 span{display:block;margin:5px 0 0}.section-heading>label{white-space:normal}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}

.core-shift-note{margin:0 0 18px;border-left:2px solid #3e7588}.core-shift-note h3{font-size:13px;margin:0 0 7px}.core-shift-note p{font-size:12px;line-height:1.8;color:#a9bdce;margin:0;max-width:1100px}.core-shift-note strong{color:var(--text);font-weight:550}