:root {
  color-scheme: light;
  --canvas: #e7f1e3;
  --hero: #d2e6ca;
  --panel: #f2f7ee;
  --band: #c4dcbb;
  --leaf: #367b47;
  --leaf-deep: #285c3b;
  --text: #233e2d;
  --secondary: #3f5845;
  --line: #91b28c;
  --font: "Trebuchet MS", "Gill Sans", sans-serif;
  --gutter: max(40px, calc((100% - 1180px) / 2));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--canvas); color: var(--text); font-family: var(--font); font-size: 18px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
[hidden] { display: none !important; }
::selection { color: #ffffff; background: var(--leaf-deep); }
a { color: var(--leaf-deep); text-decoration-thickness: 2px; text-underline-offset: 5px; }
a:hover { text-decoration-thickness: 3px; }
a, button, summary { -webkit-tap-highlight-color: #b1d0a8; }
button, summary { font: inherit; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--leaf-deep); outline-offset: 5px; }
button { cursor: pointer; }
main:focus { outline: none; }
h1, h2, h3, p, figure, dl { margin: 0; }
h1, h2, h3 { font-family: var(--font); color: var(--leaf-deep); font-weight: 700; line-height: 1.16; }
h1 { font-size: clamp(2.5rem, 4.8vw, 4.25rem); letter-spacing: -0.025em; }
h2 { font-size: clamp(1.75rem, 2.6vw, 2.3rem); letter-spacing: -0.015em; }
h3 { font-size: 1.5rem; }
p + p { margin-top: 1rem; }
p, dd, li, a, button, summary, figcaption { overflow-wrap: anywhere; }
.site-shell { width: 100%; margin-inline: auto; }
.masthead, .hero, .reading-row, .evidence, .comparison, .next-read, .page-index, .footer { padding-inline: var(--gutter); }
.skip-link { position: fixed; z-index: 10; left: 20px; top: 16px; min-height: 48px; padding: 12px 20px; color: #ffffff; background: var(--leaf-deep); transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); outline-color: var(--leaf); }
.masthead { min-height: 102px; display: flex; justify-content: space-between; align-items: center; gap: 32px; background: var(--canvas); border-top: 12px solid var(--leaf); }
.place-mark { font-size: 20px; font-weight: 700; color: var(--leaf-deep); }
.place-mark span:last-child, .masthead-note { color: var(--secondary); font-weight: 400; }
.masthead-note { margin: 0; font-size: 17px; }
.hero { position: relative; display: grid; align-items: center; min-height: 420px; padding-block: 64px 72px; background: var(--hero); border-bottom: 18px solid var(--band); }
.has-diagram { grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr); gap: 64px; }
.hero-copy { min-width: 0; }
.hero-badge { margin-bottom: 24px; color: var(--leaf-deep); font-size: 18px; font-weight: 700; }
.hero h1 { max-width: 22ch; }
.home .hero h1 span { display: block; }
.gradient-type { color: var(--leaf); }
.hero-copy > p:last-of-type { max-width: 58ch; margin-top: 26px; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 32px; }
.hero-actions a { display: inline-flex; gap: 20px; justify-content: space-between; align-items: center; min-height: 52px; padding: 13px 18px; border-radius: 0; font-size: 17px; font-weight: 700; }
.button-link { color: #ffffff; background: var(--leaf); border: 2px solid var(--leaf); text-decoration: none; }
.button-link:hover { background: var(--leaf-deep); border-color: var(--leaf-deep); }
.quiet-link { color: var(--leaf-deep); border: 2px solid var(--leaf); background: transparent; }
.quiet-link:hover { background: var(--canvas); }
.eyebrow { font-family: var(--font); font-size: 17px; font-weight: 700; color: var(--leaf-deep); line-height: 1.5; letter-spacing: 0; text-transform: none; }

/* Flat bands inside a doorway-shaped frame replace the orbit decoration. */
.signal-diagram { position: relative; min-width: 0; padding: 100px 32px 34px; min-height: 450px; background: var(--leaf); color: #ffffff; border-radius: 200px 200px 0 0; overflow: hidden; isolation: isolate; }
.diagram-space { position: absolute; inset: 0; pointer-events: none; z-index: -1; }
.orbit { position: absolute; display: block; width: 100%; height: 14px; background: #81ad78; }
.orbit-a { inset: 26px 0 auto; }
.orbit-b { inset: 47px 0 auto; height: 7px; background: #b5d3a9; }
.signal { display: none; }
.diagram-heading { position: relative; max-width: 24ch; font-weight: 700; font-size: 20px; line-height: 1.4; }
.diagram-nodes { position: relative; display: grid; list-style: decimal; gap: 10px; margin: 24px 0; padding: 0; list-style-position: inside; }
.diagram-nodes li { padding: 10px 14px; background: var(--panel); color: var(--text); font-size: 17px; }
.diagram-nodes li::marker { color: var(--leaf-deep); font-weight: 700; }
.signal-diagram figcaption { max-width: 32ch; color: #ffffff; font-size: 17px; line-height: 1.55; }

.reading-stack { width: 100%; }
.reading-row { display: grid; grid-template-columns: minmax(0, 1fr) 18rem; column-gap: 88px; align-items: start; padding-block: 64px; background: var(--canvas); }
.reading-row:nth-child(3n + 2) { background: var(--band); }
.reading-row:nth-child(3n) { background: #d9e9d3; }
.body-copy { max-width: 70ch; min-width: 0; }
.body-copy h2 { max-width: 29ch; margin-bottom: 24px; }
.margin-note { padding: 64px 28px 30px; border-radius: 144px 144px 0 0; background: var(--panel); min-width: 0; }
.margin-note .eyebrow { margin-bottom: 20px; }
.margin-note dt { font-size: 18px; font-weight: 700; color: var(--leaf-deep); }
.margin-note dd { margin: 6px 0 24px; font-size: 17px; color: var(--secondary); line-height: 1.6; }
.margin-note dd:last-child { margin-bottom: 0; }
.reading-row.alternate { grid-template-columns: 18rem minmax(0, 1fr); }
.alternate .body-copy { grid-column: 2; grid-row: 1; }
.alternate .margin-note { grid-column: 1; grid-row: 1; }
.evidence { padding-block: 64px; background: #b7d4ae; }
.evidence > h2 { max-width: 30ch; margin-bottom: 32px; }
.evidence-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.evidence-card { display: flex; flex-direction: column; align-items: flex-start; min-width: 0; padding: 42px 32px 32px; border-radius: 64px 64px 0 0; background: var(--panel); }
.evidence-card .eyebrow { margin-bottom: 14px; }
.evidence-card h3 { margin-bottom: 16px; max-width: 32ch; }
.evidence-card p { max-width: 62ch; }
.evidence-card .source-link { display: inline-flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 48px; margin-top: 24px; padding: 10px 16px; border: 2px solid var(--leaf); border-radius: 0; font-weight: 700; }
.evidence-card .source-link:hover { background: var(--hero); }
.evidence-grid:has(.evidence-card:only-child) { grid-template-columns: minmax(0, 800px); }
.next-read { padding-block: 40px 44px; background: var(--leaf); color: #ffffff; }
.next-read .eyebrow { color: #ffffff; }
.next-read > a { display: flex; align-items: center; justify-content: space-between; gap: 32px; min-height: 60px; margin-top: 10px; padding-block: 10px; color: #ffffff; font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; line-height: 1.35; }
.next-read > a:focus-visible { outline-color: #ffffff; }
.page-index { padding-block: 32px; background: var(--hero); }
.page-index summary { min-height: 48px; padding-block: 10px; cursor: pointer; color: var(--leaf-deep); font-size: 20px; font-weight: 700; text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 5px; }
.index-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 32px; padding-block: 28px 12px; }
.index-label { color: var(--leaf-deep); font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 14px; }
.index-grid ul { list-style: none; padding: 0; margin: 0; }
.index-grid a { min-height: 48px; display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 0; }
.index-grid a[aria-current="page"] { font-weight: 700; text-decoration-thickness: 3px; }
.index-grid a span { flex: 0 0 auto; }
.footer { display: flex; align-items: center; justify-content: space-between; gap: 56px; padding-block: 40px 48px; background: var(--canvas); border-bottom: 12px solid var(--leaf); }
.footer > p { max-width: 65ch; font-size: 17px; color: var(--secondary); }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 24px; flex: 0 0 auto; }
.footer-links a { display: inline-flex; align-items: center; padding-block: 12px; min-height: 48px; font-size: 17px; }

.comparison { padding-block: 48px 64px; background: var(--band); }
.comparison > h2 { max-width: 28ch; margin-bottom: 24px; }
.comparison-controls { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.comparison-controls button { min-height: 48px; min-width: 44px; padding: 10px 16px; border-radius: 0; border: 2px solid var(--leaf); background: var(--panel); color: var(--leaf-deep); }
.comparison-controls button[aria-pressed="true"] { background: var(--leaf); color: #ffffff; border-color: var(--leaf); font-weight: 700; }
.comparison-controls button:hover { border-color: var(--leaf-deep); text-decoration: underline; }
.compare-status { font-size: 17px; color: var(--secondary); margin-bottom: 24px; }
.comparison-panels { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.comparison-panels:has(.comparison-panel[hidden]) { grid-template-columns: minmax(0, 800px); }
.comparison-panel { background: var(--panel); border-radius: 80px 80px 0 0; padding: 48px 32px 32px; min-width: 0; }
.comparison-panel h3 { margin-bottom: 20px; }
.comparison-panel p { max-width: 62ch; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media (max-width: 1100px) {
  :root { --gutter: 36px; }
  .has-diagram { gap: 36px; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); }
  .signal-diagram { padding-inline: 24px; }
  .reading-row { column-gap: 48px; grid-template-columns: minmax(0, 1fr) 16rem; }
  .reading-row.alternate { grid-template-columns: 16rem minmax(0, 1fr); }
  .index-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
}
@media (max-width: 820px) {
  :root { --gutter: 24px; }
  .masthead { min-height: 88px; }
  .masthead-note { display: none; }
  .hero { padding-block: 44px 48px; min-height: 0; }
  .has-diagram { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .hero h1 { max-width: 22ch; }
  .signal-diagram { width: 100%; max-width: 480px; min-height: 0; padding: 100px 28px 30px; }
  .signal-diagram figcaption { max-width: 40ch; }
  .reading-row, .reading-row.alternate { grid-template-columns: minmax(0, 1fr); gap: 32px; padding-block: 44px; }
  .alternate .body-copy, .alternate .margin-note { grid-column: auto; grid-row: auto; }
  .margin-note { max-width: 440px; padding: 44px 28px 28px; border-radius: 80px 80px 0 0; }
  .body-copy h2 { margin-bottom: 20px; }
  .evidence, .comparison { padding-block: 44px; }
  .evidence-grid, .comparison-panels { grid-template-columns: minmax(0, 1fr); }
  .footer { display: block; padding-block: 32px 40px; }
  .footer-links { margin-top: 16px; }
}
@media (max-width: 480px) {
  :root { --gutter: 20px; }
  h1 { font-size: 2.5rem; }
  .place-mark { font-size: 19px; }
  .hero-badge { font-size: 17px; margin-bottom: 20px; }
  .hero-copy > p:last-of-type { margin-top: 24px; }
  .hero-actions { display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .hero-actions a { min-height: 54px; }
  .index-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 24px; }
  .evidence-card, .comparison-panel { padding: 40px 24px 28px; border-radius: 56px 56px 0 0; }
  .comparison-controls { display: grid; grid-template-columns: minmax(0, 1fr); }
  .comparison-controls button { width: 100%; }
  .next-read > a { gap: 20px; }
}
@media print {
  body { color: #000000; background: #ffffff; font-size: 12pt; }
  :root { --gutter: 0px; }
  .masthead, .hero-badge, .diagram-space, .comparison-controls, .next-read, .page-index, .footer-links, .skip-link { display: none !important; }
  .hero { padding: 16px 0 32px; background: #ffffff; border: 0; }
  .has-diagram { display: block; }
  .signal-diagram { margin-top: 24px; padding: 24px; color: #000000; background: #ffffff; border: 2px solid #777777; border-radius: 0; min-height: 0; }
  .diagram-nodes li { color: #000000; background: #ffffff; }
  h1 { font-size: 36px; }
  h1, h2, h3, .gradient-type { color: #000000; }
  .reading-row, .reading-row.alternate { grid-template-columns: minmax(0, 1fr) 14rem; gap: 32px; background: #ffffff; padding-block: 24px; }
  .alternate .body-copy { grid-column: 1; }
  .alternate .margin-note { grid-column: 2; }
  .evidence, .comparison, .evidence-card, .comparison-panel, .margin-note, .footer { background: #ffffff; border-radius: 0; }
  .evidence-card, .comparison-panel, .margin-note { padding: 20px; border: 1px solid #777777; break-inside: avoid; }
  .eyebrow, .margin-note dd, .compare-status, .signal-diagram figcaption, .footer > p { color: #333333; }
  a { color: #000000; }
}