:root{font-family:Arial,Helvetica,sans-serif;color:#29383d;background:#fff;--ink:#29383d;--teal:#087d86;--coral:#c74e46;--gold:#967011;--muted:#5c7279;--line:#d6e2e4}
*{box-sizing:border-box;letter-spacing:0}body{margin:0}header,main{max-width:1500px;margin:auto;padding:20px 28px}header{display:flex;justify-content:space-between;align-items:center;gap:18px;border-bottom:2px solid var(--ink)}h1{font-size:26px;line-height:1.25;margin:7px 0 0}h2{font-size:17px;line-height:1.4;margin:0}h3{font-size:16px;line-height:1.4;margin:0 0 10px}a{color:#116d7a;text-underline-offset:3px}.series{font-size:13px;text-decoration:none;font-weight:600}.commands{display:flex;gap:7px;flex-wrap:wrap}button,input,select{font:inherit}button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:8px;border:1px solid #b9cdd1;border-radius:4px;background:#fff;color:var(--ink);cursor:pointer;min-height:38px}button:hover{background:#edf7f7}button svg{width:18px;height:18px;flex-shrink:0}button[aria-pressed=true]{background:var(--teal);color:#fff;border-color:var(--teal)}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #b57c19;outline-offset:3px}.commands button{width:40px;height:40px}.workspace{display:grid;grid-template-columns:236px minmax(0,1fr);gap:28px}aside{background:#f1f6f7;padding:17px;align-self:start;min-width:0}.field{display:grid;gap:8px;margin-bottom:17px;font-size:13px;font-weight:600;min-width:0}.field-head{display:flex;justify-content:space-between;align-items:center;gap:8px}.field output{font-weight:400;font-variant-numeric:tabular-nums}.field-head output{white-space:nowrap}select,input[type=number]{width:100%;min-width:0;border:1px solid #adc5cd;border-radius:3px;background:#fff;color:inherit;min-height:36px;padding:6px 8px;font-size:14px}input[type=range]{width:100%;min-width:0;margin:3px 0;accent-color:var(--teal);min-height:22px}.experiment{min-width:0}.equation{font:22px/1.5 Georgia,'Times New Roman',serif;color:#136d75;margin:0 0 22px;overflow-wrap:anywhere}.visuals{display:grid;grid-template-columns:minmax(270px,.85fr) minmax(0,1.3fr);gap:26px}.visuals>section{min-width:0}.subhead{font-size:12px;line-height:1.6;color:var(--muted);margin:5px 0 8px;min-height:20px}canvas{display:block;width:100%;touch-action:pan-y}#clock{height:300px;background:#f6f9fa}#bead{height:95px}#history{height:395px;cursor:crosshair}.legend{display:flex;flex-wrap:wrap;gap:7px 14px;font-size:11px;line-height:1.8;color:var(--muted);padding-top:8px;min-height:29px}.legend span:before{content:'';display:inline-block;width:14px;height:3px;background:var(--teal);margin:0 5px 3px 0}.legend .arc-key:before,.legend .compare-key:before{background:var(--gold)}.legend .value-key:before{background:var(--coral)}.figure-head,.section-head{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:6px}.figure-head span,.section-head span{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}.caption{font-size:13px;line-height:1.65;color:var(--muted);margin:10px 0 18px}.scrub{display:grid;grid-template-columns:auto minmax(0,1fr) 72px;align-items:center;gap:12px;font-size:13px;margin:10px 0 16px}.scrub input{accent-color:var(--coral)}.scrub output{text-align:right;font-variant-numeric:tabular-nums}.readouts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;padding:14px 0;border-block:1px solid var(--line)}.readouts dl{margin:0;min-width:0}.readouts dt{font-size:12px;line-height:1.5;color:var(--muted)}.readouts dd{margin:6px 0 0;font-size:20px;line-height:1.4;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.phase-strip{display:grid;grid-template-columns:1fr 1fr;gap:24px;border-top:1px solid var(--line);padding-top:8px}.phase-strip dl{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:10px 12px;font-size:13px;line-height:1.5}.phase-strip dt{color:var(--muted)}.phase-strip dd{margin:0;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.landmark-band,.guide{border-top:1px solid var(--line);margin-top:28px;padding-top:24px}.table-scroll{overflow-x:auto;margin-top:14px}table{border-collapse:collapse;width:100%;font-size:13px;line-height:1.5}th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);font-variant-numeric:tabular-nums}th{font-weight:600;color:var(--muted)}td button{width:34px;height:34px;min-height:34px}tr[data-active=true]{background:#f1f7f7}.guide>h2{margin-bottom:20px}.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px 42px}.guide p{font-size:14px;line-height:1.75;margin:10px 0;color:#435b62}.guide .scope{border-top:1px solid var(--line);padding-top:18px;color:var(--muted);font-size:13px}footer{border-top:1px solid var(--line);padding-top:20px;margin-top:24px;font-size:12px;line-height:1.9}#error{font-size:13px;line-height:1.6;color:#a12b20}.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}[hidden]{display:none!important}
.table-scroll{position:relative}
@media(max-width:1150px){header,main{padding:18px}.workspace{grid-template-columns:220px minmax(0,1fr);gap:20px}.visuals{grid-template-columns:minmax(230px,.9fr) minmax(0,1.2fr);gap:18px}.readouts{grid-template-columns:1fr 1fr}.phase-strip{grid-template-columns:1fr;gap:0}}
@media(max-width:950px){.visuals{grid-template-columns:1fr}.clock-view{max-width:500px;width:100%;margin:auto}#history{height:300px}.history-view .subhead{min-height:0}.phase-strip dl{margin:10px 0}}
@media(max-width:700px){header{align-items:start;flex-direction:column;gap:15px}header,main{padding:16px}h1{font-size:24px}.commands button{width:42px;height:42px}.workspace{display:flex;flex-direction:column;gap:20px}.experiment{order:-1}.equation{font-size:20px;margin-bottom:16px}#clock{height:290px}#history{height:290px}.visuals{gap:14px}.readouts{gap:12px}.readouts dd{font-size:18px}.scrub{grid-template-columns:auto minmax(40px,1fr) 62px;gap:8px}.scrub input{min-height:32px}aside{display:grid;grid-template-columns:1fr 1fr;gap:8px 14px;padding:16px;width:100%}.field{margin-bottom:10px}aside>.field:first-child,aside>.field[for=rate-mode],aside>.field[for=compare],#error{grid-column:1/-1}select,input[type=number]{font-size:16px;min-height:40px}input[type=range]{min-height:30px}.guide-grid{grid-template-columns:1fr}.phase-strip{gap:0}.phase-strip dl{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr)}th,td{padding:9px 6px;font-size:12px}.table-scroll table{min-width:460px}.landmark-band,.guide{margin-top:24px}td button{width:40px;height:40px}.field-head{align-items:start}}