/* Moment matching: open reading columns and a full-width experimental figure. */
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*{box-sizing:border-box}
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a{color:var(--blue);text-underline-offset:4px}a:hover{color:var(--ink)}
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h1{font-size:var(--type-h1);margin:18px 0 23px;max-width:950px}
h2{font-size:var(--type-h2);margin:0 0 22px;max-width:820px}h3{font-size:var(--type-h3);margin:34px 0 10px}
p{margin:0 0 20px}.hero{padding-block:42px 38px}
.eyebrow{display:flex;align-items:center;gap:12px;font-size:18px;letter-spacing:0;font-weight:500;color:var(--muted);text-transform:none}
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.intro-note{font-size:var(--type-note);color:var(--muted);margin:23px 0 0;max-width:75ch}
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.section-label>span{display:block;color:var(--muted);font-size:18px;letter-spacing:.025em;font-weight:600;margin-bottom:12px}
.section-label p{font-size:18px;line-height:1.55;color:var(--muted);max-width:17ch}
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.experiment{padding-block:40px 35px;border-block:1px solid var(--rule);background:var(--white)}
.experiment-heading{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:30px}.experiment-heading .eyebrow{margin-bottom:12px}.experiment-heading h2{margin:0}.experiment-heading>p{max-width:32ch;font-size:18px;margin:0;color:var(--muted)}
.lab{background:transparent;border:0;padding:0}
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label{display:block;font-size:18px;font-weight:600;margin-bottom:10px}output{float:right;font:500 22px/1.2 var(--font-ui);color:var(--blue);font-variant-numeric:tabular-nums}
input[type=range]{width:100%;accent-color:var(--blue);height:26px;margin:0;cursor:pointer}
select{width:100%;appearance:auto;border:1px solid #aab4c0;padding:10px 12px;color:var(--ink);background:#fff;font:18px/1.4 var(--font-ui);border-radius:2px;cursor:pointer}
.range-labels{display:flex;justify-content:space-between;color:var(--muted);font-size:18px;font-variant-numeric:tabular-nums}.control-help{font-size:var(--type-note);color:var(--muted);margin:10px 0 0;line-height:1.55}
.plot-legend{display:flex;flex-wrap:wrap;gap:10px 25px;align-items:center;font-size:18px;padding-top:25px}.plot-legend>span{display:inline-flex;align-items:center;gap:8px}
.line{display:inline-block;width:23px;border-top:3px solid}.direct{border-color:var(--blue)}.simulated{border-color:var(--copper);border-top-style:dashed}.target{border-color:#7f8b91;border-top-width:1px;border-top-style:dashed}.marker{display:inline-block;height:12px;border-left:1px dashed var(--ink);width:3px}
.plot{margin:18px 0 0}.plot picture{display:block}.plot img{display:block;width:100%;height:auto;aspect-ratio:1360/570;background:var(--white)}
figcaption{font-size:var(--type-note);color:var(--muted);line-height:1.65;margin-top:10px;max-width:85ch}
.readouts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px;border-top:1px solid var(--rule);margin-top:24px;padding-top:20px}
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.asset-status{font-size:18px;color:var(--muted);margin:15px 0 0}.asset-status:empty{display:none}
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.reading{border-top:0}.repetitions,.model{border-top:1px solid var(--rule)}
.pullquote{border-left:2px solid var(--blue);margin:28px 0;padding:3px 0 3px 22px}.pullquote p{font-size:20px;line-height:1.6;color:var(--ink);margin:0;max-width:68ch}
.question{margin-top:30px;padding:22px 0 0;border-top:1px solid var(--rule)}.question>span{font-size:18px;letter-spacing:.025em;font-weight:600;color:var(--muted)}.question>p{font-size:22px;line-height:1.5;margin:12px 0 18px}
details{font-size:18px}summary{cursor:pointer;color:var(--blue);width:fit-content}details p{margin:15px 0 0;max-width:72ch}
.source{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:65px;padding-block:38px 44px;border-top:1px solid var(--rule)}.source .eyebrow{margin-bottom:13px}.source h2{font-size:var(--type-h2);margin-bottom:17px}.source p{font-size:18px;color:var(--muted);max-width:62ch;margin:0}.source-links{display:flex;flex-direction:column;gap:17px;justify-content:center;font-size:18px}
.download{display:flex;justify-content:space-between;gap:20px;padding:13px 0;border-block:1px solid var(--rule);color:var(--blue);text-decoration:none;max-width:380px}.download:hover{border-color:var(--blue);color:var(--ink)}
footer{display:flex;justify-content:space-between;gap:25px;flex-wrap:wrap;font-size:18px;color:var(--muted);border-top:1px solid var(--rule);padding-block:23px 30px}.noscript{font-size:18px;border-left:2px solid var(--copper);padding:10px 18px;margin:20px 0}
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.plot-scroll-hint{display:none}
.formula-block{padding:18px 0;margin:24px 0;border-block:1px solid var(--rule)}.formula-block .formula{font-size:24px;white-space:normal;margin:10px 0}.equation-full{padding:12px 0;white-space:normal}
:focus-visible{outline:3px solid var(--copper);outline-offset:4px}input[type=range]:focus-visible{outline-offset:5px}[hidden]{display:none!important}
@media(max-width:1000px){.idea,.reading,.bridge{grid-template-columns:140px minmax(0,1fr);gap:30px}.formula{font-size:24px}.hero-bottom{align-items:start;flex-direction:column;gap:22px}.lab-controls{gap:24px}.experiment-heading{align-items:start;flex-direction:column;gap:16px}.experiment-heading>p{max-width:none}.experiment-heading>p br{display:none}.source{gap:35px}}
@media(max-width:700px){
 body{font-size:18px}.wrap{width:calc(100% - 40px)}.masthead{align-items:start;gap:17px;padding-block:19px;flex-direction:column}.wordmark{font-size:18px}nav{font-size:18px;gap:16px}.hero{padding-block:30px}.hero h1{font-size:var(--type-h1);margin-block:17px 20px}.lead{font-size:var(--type-lead)}.wide{display:none}.intro-note{margin-top:20px}
 h2{font-size:var(--type-h2)}h3{font-size:var(--type-h3)}.idea,.reading,.bridge{grid-template-columns:minmax(0,1fr);gap:18px;padding-block:30px}.section-label{display:flex;justify-content:space-between;gap:20px;align-items:start}.section-label>span{margin:0;padding-top:2px}.section-label p{font-size:18px;line-height:1.5;text-align:right;margin:0;max-width:24ch}.section-label br{display:none}
 .equation-pair{grid-template-columns:minmax(0,1fr);gap:15px;margin-block:24px 13px}.equation-pair>div{padding-block:13px 0}.formula{font-size:24px;margin-block:10px;white-space:normal}.formula-note{margin-bottom:5px}
 .experiment{padding-block:30px}.experiment-heading h2{font-size:var(--type-h2)}.lab-controls{grid-template-columns:minmax(0,1fr);gap:23px;padding-block:20px}.control-help{margin-top:7px}.plot-legend{font-size:18px;gap:9px 17px;padding-top:21px}.plot img{aspect-ratio:680/1080}
 .readouts{grid-template-columns:minmax(0,1fr);gap:0;padding-top:3px;margin-top:20px}.readouts>div{display:grid;grid-template-columns:minmax(0,1fr) auto;column-gap:14px;align-items:baseline;padding:13px 0;border-bottom:1px solid var(--rule)}.readouts>div:last-child{border-bottom:0}.readouts>div>span{grid-column:1;grid-row:1;font-size:var(--type-label)}.readouts strong{grid-column:2;grid-row:1/3;align-self:center;font-size:var(--type-value);line-height:1.2;margin:0}.readouts small{grid-column:1;grid-row:2;font-size:var(--type-label);margin-top:4px}.estimate-line{font-size:18px;gap:12px}.estimate-line p{line-height:1.8}.estimate-separator{margin-inline:7px}.estimate-line p>span:first-child{margin-left:4px}.estimate-line button{font-size:18px}
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 .source{grid-template-columns:minmax(0,1fr);gap:24px;padding-block:30px}.source h2{font-size:var(--type-h2)}.download{max-width:none}footer{flex-direction:column;gap:12px}
 .table-wrap{margin-top:22px}table{font-size:18px}caption{font-size:18px}th,td{padding:11px 7px}thead th{font-size:18px}.formula-block .formula{font-size:22px}.formula-block .fraction{font-size:18px}.equation-full{font-size:24px}.static-plot figcaption{min-width:0}.plot-scroll-hint{display:block;color:var(--muted);font-size:18px;line-height:1.5;margin:0 0 10px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media(min-width:701px) and (max-width:900px){.equation-pair{grid-template-columns:minmax(0,1fr);gap:18px}.equation-pair>div{max-width:100%}}

/* The assignment and worked calculation use the same quiet reading scale. */
.task-brief{border-top:1px solid var(--rule);padding-block:32px}
.task-brief h2{margin-bottom:20px}
.task-givens{margin:0;max-width:900px;border-block:1px solid var(--rule)}.task-givens>div{display:grid;grid-template-columns:85px minmax(0,1fr);gap:18px;padding:14px 0}.task-givens>div+div{border-top:1px solid var(--rule)}
.task-givens dt{font-size:var(--type-body);font-weight:600}
.task-givens dd{font-size:var(--type-body);margin:0;line-height:1.6}
.task-path{display:flex;flex-wrap:wrap;gap:8px 16px;list-style:none;margin:25px 0 0;padding:0;font-size:var(--type-note);color:var(--muted)}
.task-path li:not(:last-child)::after{content:"→";margin-left:16px;color:var(--blue)}
.moment-definition-formulas{padding-block:3px;margin-block:20px;border-block:1px solid var(--rule)}
.moment-definition-formulas .formula{font-size:22px;white-space:normal;line-height:1.9}
.model-settings{font-size:var(--type-note);margin-top:20px}
.reader-tasks{max-width:88ch;margin:0 0 24px;padding-left:24px;font-size:var(--type-note)}
.reader-tasks li{padding-left:4px;margin-block:7px}
.moment-walkthrough{border-bottom:1px solid var(--rule);padding-block:28px 8px;scroll-margin-top:28px}
.walkthrough-heading h3{margin:0 0 9px;font-size:var(--type-h3)}
.walkthrough-heading>p{font-size:var(--type-note);color:var(--muted);margin-bottom:16px}
.walkthrough-step{max-width:88ch;border-top:1px solid var(--rule);padding-block:21px}
.walkthrough-step h4{font-size:var(--type-body);font-weight:600;line-height:1.5;margin:0 0 12px}
.walkthrough-step>p{font-size:var(--type-body);margin-bottom:14px;max-width:80ch}
.walkthrough-table-wrap{max-width:760px;margin-block:16px}
.walkthrough-table{font-size:var(--type-note)}
.walkthrough-table caption,.walkthrough-table thead th{font-size:var(--type-note)}
.walkthrough-table th,.walkthrough-table td{white-space:nowrap;padding-block:10px}
.walkthrough-result strong{font-weight:600;font-variant-numeric:tabular-nums}
.walkthrough-step .walkthrough-result{margin-bottom:0}
.walkthrough-list{margin-top:14px;font-size:var(--type-note)}
.saved-values-list{columns:4;column-gap:40px;padding-left:30px;max-width:700px;margin:18px 0 0;font-variant-numeric:tabular-nums}
.saved-values-list li{break-inside:avoid;padding:3px 0 3px 5px}
.walkthrough-status{font-size:var(--type-note);color:var(--muted)}
.walkthrough-status:empty{display:none}
@media(max-width:700px){
 .task-brief{padding-block:26px}.task-givens>div{grid-template-columns:minmax(0,1fr);gap:4px}
 .task-path{gap:8px 12px;margin-top:20px}.task-path li:not(:last-child)::after{margin-left:12px}
 .moment-definition-formulas .formula{font-size:21px}.reader-tasks{padding-left:21px}
 .moment-walkthrough{padding-top:23px}.walkthrough-step{padding-block:18px}.saved-values-list{columns:2;column-gap:25px}
 .walkthrough-table th,.walkthrough-table td{padding-inline:7px}
}