/* LFE Power page: copied from the econofai guide layout (house tokens only), plus the additions at the end. */
body { font-size: 18px; line-height: 1.6; }
.shell { width: min(1020px, calc(100% - 96px)); margin-inline: auto; }
.skip { position: absolute; left: 12px; top: -80px; padding: 12px; background: var(--paper); z-index: 100; }
.skip:focus { top: 12px; }
.lfe-strip { display: flex; gap: 24px; padding: 13px 0; letter-spacing: .07em; font-size: 12px; align-items: center; }
.lfe-strip nav { display: flex; gap: 22px; margin-left: auto; text-transform: none; letter-spacing: 0; font-size: 15px; font-weight: 400; }
.lfe-strip nav a { padding-block: 6px; }
.lfe-strip nav a:hover { text-decoration: underline; text-underline-offset: 4px; }
.theme-toggle { color: var(--muted); min-height: 32px; }
.mast { padding: 27px 0 28px; }
h1 { font-size: clamp(37px, 5.3vw, 62px); max-width: none; line-height: 1.07; letter-spacing: -.025em; }
.intro { font-size: clamp(19px, 2.1vw, 23px); line-height: 1.45; margin: 13px 0 0; color: var(--muted); }
section { scroll-margin-top: 20px; }
h2 { font-size: 28px; max-width: none; margin: 0 0 10px; line-height: 1.25; }
.ideas-list { list-style: none; padding: 0; margin: 0; counter-reset: idea; }
.ideas-list > li { counter-increment: idea; position: relative; padding: 17px 0 18px 53px; border-top: 1px solid var(--hairline); }
.ideas-list > li::before { content: counter(idea, decimal-leading-zero); position: absolute; left: 0; top: 18px; font-size: 19px; color: var(--accent); line-height: 1.3; font-variant-numeric: tabular-nums; }
.ideas-list h3 { font-size: 23px; line-height: 1.24; margin: 0 0 6px; max-width: none; }
.ideas-list p { margin: 0; max-width: 78ch; font-size: 18px; line-height: 1.55; }
.cost-directions { display: flex; flex-wrap: wrap; gap: 6px 30px; margin-top: 10px; color: var(--muted); font-size: 16px; }
.cost-directions span { display: inline-flex; align-items: baseline; gap: 9px; }
.cost-directions b { color: var(--accent); font-size: 22px; line-height: 1; }
.idea-link { display: inline-block; margin-top: 7px; font-size: 16px; color: var(--accent); text-underline-offset: 3px; }
.learning-loop { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px; margin-top: 10px; color: var(--muted); font-size: 16px; }
.learning-loop span[aria-hidden] { color: var(--accent); }
.reading-section { border-top: 1px solid var(--hairline); margin-top: 24px; padding-top: 28px; }
.talk-list { display: grid; gap: 0; }
.talk-list > a { text-decoration: none; padding: 14px 0; border-bottom: 1px solid var(--hairline); }
.talk-list > a:last-child { border-bottom: none; }
.talk-list h3 { margin: 0 0 3px; font-size: 22px; max-width: none; }
.talk-list h3 span { font-size: 18px; color: var(--accent); }
.talk-list p { margin: 0; color: var(--muted); font-size: 17px; }
.talk-list > a:hover h3 { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }
.library-intro { margin: 0 0 12px; color: var(--muted); font-size: 17px; max-width: 76ch; }
.reading-list { margin: 0; padding: 0; list-style: none; }
.reading-list li { padding: 11px 0; border-bottom: 1px solid var(--hairline); }
.reading-list a { font-size: 18px; color: var(--accent); text-underline-offset: 3px; }
.reading-list span { display: block; color: var(--muted); font-size: 16px; margin-top: 2px; }
.all-readings { display: inline-block; margin-top: 16px; padding-block: 6px; color: var(--accent); font-size: 17px; text-underline-offset: 4px; }
.sketch-footer { border-top: 1px solid var(--hairline); margin-top: 32px; padding-block: 20px 28px; font-size: 14px; color: var(--muted); }
.sketch-footer > div { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px 24px; }
.sketch-footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.sketch-footer a { text-underline-offset: 3px; padding-block: 5px; }
.sketch-footer p { font-size: 12px; margin: 10px 0 0; }
@media (max-width: 650px) {
  .shell { width: calc(100% - 36px); }
  .lfe-strip { flex-wrap: wrap; gap: 2px 14px; padding-block: 9px; font-size: 10px; }
  .lfe-strip > a { flex: 1; }
  .lfe-strip nav { width: 100%; order: 3; margin-left: 0; gap: 24px; font-size: 15px; }
  .mast { padding-block: 22px 23px; }
  h1 { font-size: clamp(35px, 8.8vw, 46px); }
  .intro { font-size: 19px; margin-top: 11px; }
  h2 { font-size: 25px; margin-bottom: 10px; }
  .ideas-list > li { padding: 15px 0 16px 36px; }
  .ideas-list > li::before { font-size: 16px; top: 17px; }
  .ideas-list h3 { font-size: 21px; }
  .ideas-list p { font-size: 17px; line-height: 1.5; }
  .cost-directions { gap: 4px 18px; font-size: 14px; }
  .learning-loop { gap: 4px 8px; font-size: 14px; }
  .reading-section { margin-top: 18px; padding-top: 24px; }
  .talk-list h3 { font-size: 21px; }
  .reading-list a { font-size: 17px; }
  .sketch-footer > div { display: block; }
  .sketch-footer nav { margin-top: 8px; }
}
/* Group labels belong to the argument, rather than to another navigation layer. */
.ideas-list { counter-reset: idea var(--start, 0); }
.ideas-list h4 { font-size: 23px; line-height: 1.24; margin: 0 0 6px; max-width: none; }
.foundation { margin-bottom: 24px; }
.foundation .ideas-list > li { padding-block: 20px 24px; }
.foundation h3 { font-size: clamp(24px, 2.7vw, 30px); }
.foundation h3 em { font-style: normal; color: var(--accent); }
.idea-group { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 24px; margin-top: 28px; border-top: 1px solid var(--hairline); }
.group-label { align-self: start; position: sticky; top: 24px; padding-top: 18px; }
.group-range { display: block; color: var(--muted); font-size: 14px; margin-bottom: 6px; }
.group-label h3 { font-size: 23px; line-height: 1.25; margin: 0; max-width: none; }
.idea-group .ideas-list > li:first-child { border-top: 0; }
.idea-group[data-current="true"] .group-label h3 { color: var(--accent); }
.group-label h3 { transition: color 200ms ease; }
.talk-list { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.talk-list > a { min-width: 0; border: 0; padding-block: 8px 16px; color: var(--ink); }
.talk-art { height: 178px; margin-bottom: 16px; color: var(--accent); background: var(--panel); border-block: 1px solid var(--hairline); display: flex; justify-content: center; align-items: center; overflow: hidden; font-size: 15px; }
.stack-art { flex-direction: column; gap: 0; }
.stack-art span { padding: 3px 12px; border: 1px solid var(--hairline); text-align: center; transition: transform 260ms cubic-bezier(.25,1,.5,1); }
.stack-art span:nth-of-type(1) { width: 62%; }
.stack-art span:nth-of-type(2) { width: 74%; }
.stack-art span:nth-of-type(3) { width: 86%; }
.stack-art i { font-style: normal; line-height: 20px; }
.talk-list a:is(:hover,:focus-visible) .stack-art span:first-child { transform: translateY(-4px); }
.talk-list a:is(:hover,:focus-visible) .stack-art span:last-child { transform: translateY(4px); }
.work-art, .spread-art { flex-direction: column; gap: 20px; }
.task-pieces { display: grid; grid-template-columns: repeat(3,32px); gap: 10px 16px; }
.task-pieces i { width: 32px; height: 20px; background: currentColor; opacity: .65; transition: transform 260ms cubic-bezier(.25,1,.5,1); }
.task-pieces i:nth-child(3n+1) { opacity: .3; }
.task-pieces i:nth-child(3n+2) { opacity: 1; }
.talk-list a:is(:hover,:focus-visible) .task-pieces i:nth-child(-n+3) { transform: translateX(-8px); }
.talk-list a:is(:hover,:focus-visible) .task-pieces i:nth-child(n+4) { transform: translateX(8px); }
.work-labels,.spread-labels { display: flex; align-items: center; gap: 12px; }
.work-labels b,.spread-labels b { font-weight: normal; }
.spread-nodes { width: 158px; height: 65px; position: relative; }
.spread-nodes::before { content: ""; position: absolute; top: 31px; left: 12px; right: 6px; border-top: 1px solid var(--accent); opacity: .35; }
.spread-nodes i { display: block; width: 13px; height: 13px; border: 1px solid currentColor; border-radius: 50%; background: var(--panel); position: absolute; transition: transform 260ms cubic-bezier(.25,1,.5,1); }
.spread-nodes i:nth-child(1) { left: 4px; top: 25px; background: currentColor; }
.spread-nodes i:nth-child(2) { left: 56px; top: 9px; }
.spread-nodes i:nth-child(3) { left: 56px; top: 41px; }
.spread-nodes i:nth-child(4) { left: 130px; top: 1px; }
.spread-nodes i:nth-child(5) { left: 130px; top: 25px; }
.spread-nodes i:nth-child(6) { left: 130px; top: 49px; }
.talk-list a:is(:hover,:focus-visible) .spread-nodes i:nth-child(n+4) { transform: translateX(6px); }
.talk-list h3 { font-size: 22px; line-height: 1.25; }
.talk-list p { font-size: 16px; line-height: 1.5; }
.talk-controls { display: none; }
@media (max-width: 700px) {
  .idea-group { grid-template-columns: minmax(0,1fr); gap: 10px; margin-top: 24px; }
  .group-label { position: static; display: flex; gap: 12px; align-items: baseline; padding-top: 18px; }
  .group-range { margin: 0; font-size: 13px; }
  .group-label h3 { font-size: 22px; }
  .ideas-list h4 { font-size: 21px; }
  .foundation { margin-bottom: 8px; }
  .foundation .ideas-list > li { padding-block: 16px 18px; }
  .talk-list { display: flex; gap: 18px; overflow-x: auto; scroll-snap-type: x mandatory; scroll-padding-inline: 0; scrollbar-width: thin; }
  .talk-list > a { flex: 0 0 86%; scroll-snap-align: start; }
  .talk-controls:not([hidden]) { display: flex; justify-content: flex-end; align-items: center; gap: 16px; margin-top: 10px; font-size: 14px; color: var(--muted); }
  .talk-controls button { font: inherit; font-size: 23px; border: 1px solid var(--hairline); width: 44px; height: 44px; color: var(--accent); background: var(--paper); }
  .talk-controls button:disabled { opacity: .35; cursor: default; }
}
@media (prefers-reduced-motion: reduce) {
  .talk-art *, .group-label h3 { transition: none !important; }
  .talk-list a:is(:hover,:focus-visible) .talk-art * { transform: none !important; }
}
/* ---- Power page additions (tokens only) ---- */
.credit { margin: 12px 0 0; font-size: 16px; color: var(--muted); max-width: 70ch; }
.tracker-art { flex-direction: column; gap: 10px; }
.tracker-art .flow { display: flex; align-items: center; gap: 10px; }
.tracker-art .flow b { font-weight: normal; }
.tracker-art .bar { display: flex; gap: 0; width: 70%; height: 14px; border: 1px solid currentColor; }
.tracker-art .bar i { display: block; background: currentColor; }
.reading-group { margin-top: 22px; }
.reading-group h3 { font-size: 19px; margin: 0 0 4px; max-width: none; color: var(--muted); font-weight: 400; }
.reading-group h3 span { color: var(--accent); margin-right: 8px; font-variant-numeric: tabular-nums; }
.reading-list .who { display: inline; color: var(--muted); font-size: 16px; margin: 0; }
/* ---- Topic split + motion additions ---- */
.skip { position: absolute; left: 12px; top: -80px; padding: 12px; background: var(--paper); z-index: 100; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.chain { display: flex; align-items: center; gap: 12px; margin: 22px 0 4px; max-width: 640px; font-size: 16px; color: var(--muted); }
.chain span { white-space: nowrap; }
.chain .chain-end { color: var(--accent); font-weight: 600; }
.chain i { flex: 1; min-width: 26px; height: 1px; background: var(--hairline); position: relative; }
.chain i::after { content: ""; position: absolute; top: -3px; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); opacity: 0; animation: chain-flow 2.4s linear infinite; animation-delay: var(--d, 0s); }
@keyframes chain-flow { 0% { left: 0; opacity: 0; } 15% { opacity: 1; } 85% { opacity: 1; } 100% { left: calc(100% - 7px); opacity: 0; } }
.chain-cap { margin: 0; font-size: 14px; color: var(--muted); }
.idea-ref { color: var(--accent); margin-right: 8px; text-decoration: none; font-variant-numeric: tabular-nums; }
.idea-ref:hover { text-decoration: underline; text-underline-offset: 4px; }
.next-step { display: block; margin-top: 30px; padding: 18px 0; border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); text-decoration: none; }
.next-step span { display: block; font-size: 13px; letter-spacing: .07em; text-transform: uppercase; color: var(--muted); }
.next-step strong { display: block; font-size: 22px; color: var(--accent); font-weight: 600; margin-top: 2px; }
.next-step:hover strong { text-decoration: underline; text-underline-offset: 5px; }
.idea-group .group-label { top: 64px; }
@media (max-width: 650px) { .chain { gap: 8px; font-size: 14px; } .chain i { min-width: 14px; } }
@media (prefers-reduced-motion: reduce) { .chain i::after { animation: none; opacity: 0; } }

:root { --page-w: min(1020px, calc(100% - 96px)); }
@media (max-width: 650px) { :root { --page-w: calc(100% - 36px); } }