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var(--paper-line);border-radius:var(--rad-lg);box-shadow:var(--shadow-1)}.panel-scroll{height:100%;overflow-y:auto;padding:var(--sp-5)}.panel-head{position:relative;margin-bottom:var(--sp-3)}.panel-eyebrow,.exam-anchor-eyebrow{font-family:var(--font-data);font-size:var(--text-2xs);letter-spacing:var(--tracking-wide);text-transform:uppercase;color:var(--brass)}.panel-title{font-family:var(--font-display);font-weight:600;font-size:var(--text-xl);letter-spacing:-.015em;line-height:var(--leading-tight);margin:var(--sp-1) 0 0}.panel-close{position:absolute;top:0;right:0;width:26px;height:26px;display:grid;place-items:center;border-radius:50%;color:var(--ink-faint);font-size:var(--text-xs)}.panel-close:hover{background:var(--paper-sunken);color:var(--ink)}.panel-lede{font-family:var(--font-display);font-style:italic;font-size:var(--text-lg);line-height:1.45;color:var(--ink-soft);margin:0 0 var(--sp-4)}.panel-lede strong{font-style:normal;color:var(--ink)}.panel-sub{font-family:var(--font-data);font-size:var(--text-xs);font-weight:500;letter-spacing:var(--tracking-wide);text-transform:uppercase;color:var(--ink-faint);margin:var(--sp-4) 0 var(--sp-1)}.panel-body{margin:0 0 var(--sp-2);font-size:var(--text-md)}.panel-body--quiet{color:var(--ink-soft);font-size:var(--text-sm)}.exam-anchor{margin:var(--sp-4) 0;padding:var(--sp-3) var(--sp-4);background:color-mix(in srgb,var(--brass) 8%,transparent);border-left:2px solid var(--brass);border-radius:0 var(--rad-md) var(--rad-md) 0}.exam-anchor p{margin:var(--sp-1) 0 0;font-size:var(--text-sm)}.panel-source{margin-top:var(--sp-4);padding-top:var(--sp-3);border-top:1px solid var(--paper-line);font-family:var(--font-data);font-size:var(--text-2xs);color:var(--ink-faint);line-height:1.6}.panel-footnote{font-size:var(--text-xs);color:var(--ink-faint);margin-top:var(--sp-4)}.lesson-note{margin-top:var(--sp-5);padding-top:var(--sp-4);border-top:1px solid var(--paper-line)}.compare-table{width:100%;border-collapse:collapse;font-size:var(--text-sm)}.compare-table th,.compare-table td{text-align:left;padding:var(--sp-2) var(--sp-2);border-bottom:1px solid var(--paper-line);vertical-align:top}.compare-table thead th{font-family:var(--font-data);font-size:var(--text-2xs);letter-spacing:var(--tracking-wide);text-transform:uppercase;color:var(--ink-faint)}.compare-table tbody th{font-weight:500;color:var(--ink-soft);width:26%}.drawer-scrim{display:none}@media(max-width:1400px){.era-switch{min-width:400px}.era-switch-sub{display:none}}@media(max-width:1280px){:root{--rail-w: 232px;--panel-w: 296px}.era-switch{min-width:330px}}@media(max-width:1080px){.app-main{grid-template-columns:1fr}.drawer-btn{display:grid;place-items:center;width:var(--hit-min);height:var(--hit-min);margin-left:calc(-1 * var(--sp-2))}.drawer-icon,.drawer-icon:before,.drawer-icon:after{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);position:relative;content:""}.drawer-icon:before{position:absolute;top:-6px}.drawer-icon:after{position:absolute;top:6px}.drawer-scrim{display:block;position:fixed;inset:0;background:#26231c66;z-index:19}.rail{position:fixed;top:0;bottom:0;left:0;width:min(320px,86vw);z-index:20;border-radius:0 var(--rad-lg) var(--rad-lg) 0;transform:translate(-102%);transition:transform var(--dur-med) var(--ease-out);box-shadow:var(--shadow-3)}.rail.is-open{transform:translate(0)}.panel{position:fixed;left:var(--sp-3);right:var(--sp-3);bottom:calc(var(--transport-h) + var(--sp-2));top:auto;max-height:46vh;z-index:15;transform:translateY(calc(100% + var(--transport-h) + var(--sp-4)));transition:transform var(--dur-med) var(--ease-out);box-shadow:var(--shadow-3)}.panel.is-open{transform:translateY(0)}.brand-title{font-size:var(--text-md)}.era-switch{min-width:0}.masthead{gap:var(--sp-3)}.legend{max-width:calc(100% - 120px)}.figpanel{width:240px}}@media(max-width:720px){.masthead-actions,.brand-eyebrow{display:none}.brand-title{font-size:var(--text-sm)}.era-switch-btn{padding:var(--sp-1) var(--sp-2)}.era-switch-name{font-size:var(--text-xs)}.viewbar{left:var(--sp-3);right:var(--sp-3);overflow-x:auto;justify-content:flex-start}.legend{top:calc(var(--sp-3) + 38px);max-width:calc(100% - 2 * var(--sp-3))}.figpanel{top:auto;bottom:120px;right:var(--sp-2);width:210px}.transport{gap:var(--sp-3);overflow-x:auto;flex-wrap:nowrap;justify-content:flex-start}.transport-lessons{flex-wrap:nowrap}.transport-controls{min-width:180px}.machine-cluster{flex:none}.ips-group,.mode-group,.rt-readout,.scope,.transport-eyebrow{display:none}}@media(prefers-reduced-motion:reduce){.era-switch-pill,.switch-knob,.rail,.panel,.stage-caption,.figpanel{transition:none}}