:root {
  color-scheme: dark;
  --bg: #090b0a;
  --panel: #0e1110;
  --panel-2: #121613;
  --line: #253029;
  --line-bright: #44584b;
  --text: #f1f4f2;
  --muted: #94a098;
  --signal: #b8efcd;
  --signal-strong: #73d69a;
  --mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --display: "Space Grotesk", sans-serif;
  --body: "Albert Sans", sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 78% 5%, rgba(94, 176, 126, 0.08), transparent 28rem),
    var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
code, pre { font-family: var(--mono); }

.site-header,
main,
footer {
  width: min(1240px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand { display: inline-flex; align-items: center; gap: 12px; font-family: var(--display); font-weight: 600; }
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-bright);
  color: var(--signal);
  font: 600 12px var(--mono);
}
.header-context { display: flex; gap: 24px; color: var(--muted); font-size: 14px; }
.header-context a { color: var(--text); }

main { border-inline: 1px solid var(--line); }
.instrument {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(410px, 0.8fr);
  min-height: 640px;
  border-bottom: 1px solid var(--line);
}
.instrument-copy,
.comparison { padding: clamp(52px, 7vw, 96px); }
.instrument-copy,
.comparison,
.section-intro,
.lane-console,
.path-list,
.terminal { min-width: 0; }
.instrument-copy { display: flex; flex-direction: column; justify-content: center; }
.comparison { border-left: 1px solid var(--line); background: rgba(14, 17, 16, 0.78); }

.eyebrow {
  margin: 0 0 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--signal);
  font: 500 12px var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.eyebrow span { width: 7px; height: 7px; background: var(--signal-strong); }
h1, h2, p { margin-top: 0; }
h1 {
  margin-bottom: 30px;
  max-width: 780px;
  font: 600 clamp(54px, 6.5vw, 96px)/0.97 var(--display);
  letter-spacing: -0.055em;
}
h1 em { color: var(--signal); font-style: normal; }
h2 { margin-bottom: 16px; font: 600 clamp(30px, 4vw, 50px)/1.04 var(--display); letter-spacing: -0.04em; }
.lede { max-width: 690px; color: #b4beb7; font-size: 19px; }
.identity-strip { margin-top: 48px; display: flex; flex-wrap: wrap; gap: 8px; }
.identity-strip span,
.recorded {
  border: 1px solid var(--line);
  padding: 7px 10px;
  color: var(--muted);
  font: 500 11px var(--mono);
  text-transform: uppercase;
}

.comparison-head { margin-bottom: 82px; display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.comparison-head .label { margin-bottom: 8px; color: var(--muted); font: 12px var(--mono); text-transform: uppercase; }
.comparison-head h2 { margin: 0; font-size: 32px; }
.bar-row { margin-bottom: 36px; }
.bar-label { margin-bottom: 10px; display: flex; justify-content: space-between; align-items: baseline; }
.bar-label span { color: var(--muted); font: 13px var(--mono); text-transform: uppercase; }
.bar-label strong { font: 500 30px var(--mono); letter-spacing: -0.04em; }
.bar-track { height: 10px; background: #1b211d; overflow: hidden; }
.bar-track span { display: block; width: var(--bar); height: 100%; background: var(--signal); }
.control .bar-track span { background: #56615a; }
.bar-row small { display: block; margin-top: 9px; color: var(--muted); font: 12px var(--mono); }
.delta-grid { margin: 72px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.delta-grid div { padding: 24px 16px 0 0; }
.delta-grid dt { color: var(--muted); font-size: 12px; }
.delta-grid dd { margin: 6px 0 0; color: var(--signal); font: 500 22px var(--mono); }

.lane-lab,
.release-path,
.reproduce { border-bottom: 1px solid var(--line); }
.lane-lab { display: grid; grid-template-columns: 0.75fr 1.25fr; }
.section-intro { padding: 72px 56px; }
.section-intro > p:last-child { max-width: 540px; color: var(--muted); }
.lane-console { border-left: 1px solid var(--line); background: var(--panel); }
.lane-tabs { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); }
.lane-tabs button {
  min-height: 64px;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: 500 13px var(--mono);
}
.lane-tabs button:last-child { border-right: 0; }
.lane-tabs button[aria-selected="true"] { background: var(--signal); color: #07110b; }
.lane-tabs button:focus-visible,
#copy-command:focus-visible,
a:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }
.lane-readout { padding: 56px; }
.primary-reading span { display: block; font: 500 clamp(50px, 7vw, 92px)/1 var(--mono); letter-spacing: -0.07em; }
.primary-reading small { color: var(--muted); font: 12px var(--mono); }
.trace { margin: 36px 0 24px; height: 184px; border-bottom: 1px solid var(--line); }
.trace svg { width: 100%; height: 100%; overflow: visible; }
.metric-ledger { margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); }
.metric-ledger div { padding: 20px 0; border-bottom: 1px solid var(--line); }
.metric-ledger div:nth-child(odd) { padding-right: 28px; border-right: 1px solid var(--line); }
.metric-ledger div:nth-child(even) { padding-left: 28px; }
.metric-ledger dt { color: var(--muted); font-size: 13px; }
.metric-ledger dd { margin: 6px 0 0; font: 500 18px var(--mono); }

.release-path { display: grid; grid-template-columns: 0.75fr 1.25fr; }
.path-list { margin: 0; padding: 0; border-left: 1px solid var(--line); list-style: none; }
.path-list li { min-height: 132px; display: grid; grid-template-columns: 80px 1fr; border-bottom: 1px solid var(--line); }
.path-list li:last-child { border-bottom: 0; }
.path-list > li > span { padding: 30px 24px; color: var(--signal); font: 12px var(--mono); }
.path-list div { padding: 28px 34px; border-left: 1px solid var(--line); }
.path-list strong { font: 600 19px var(--display); }
.path-list p { margin: 7px 0 0; color: var(--muted); }

.reproduce { display: grid; grid-template-columns: 0.75fr 1.25fr; }
.reproduce > div:first-child { padding: 72px 56px; }
.reproduce > div:first-child > p:last-child { color: var(--muted); }
.terminal { border-left: 1px solid var(--line); background: #060807; }
.terminal-head { height: 56px; display: flex; align-items: center; justify-content: space-between; padding: 0 24px; border-bottom: 1px solid var(--line); color: var(--muted); font: 12px var(--mono); }
#copy-command { border: 0; background: transparent; color: var(--signal); cursor: pointer; font: 12px var(--mono); }
pre { margin: 0; padding: 34px; overflow: auto; color: #ccebd7; font-size: 13px; line-height: 1.9; }

.boundary { padding: 28px 56px; display: grid; grid-template-columns: 200px 1fr; gap: 30px; background: var(--panel-2); }
.boundary strong { color: var(--signal); font: 500 12px var(--mono); text-transform: uppercase; }
.boundary p { margin: 0; color: var(--muted); font-size: 14px; }
footer { min-height: 120px; display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: 13px; }
footer p { margin: 0; }
footer div { display: flex; gap: 24px; }
footer a { color: var(--text); }

@media (max-width: 900px) {
  .instrument,
  .lane-lab,
  .release-path,
  .reproduce { grid-template-columns: 1fr; }
  .instrument { min-height: auto; }
  .comparison,
  .lane-console,
  .path-list,
  .terminal { border-left: 0; border-top: 1px solid var(--line); }
  .instrument-copy,
  .comparison,
  .section-intro,
  .reproduce > div:first-child { padding: 52px 34px; }
  .comparison-head { margin-bottom: 50px; }
}

@media (max-width: 620px) {
  .site-header, main, footer { width: min(100% - 24px, 1240px); }
  .header-context > span { display: none; }
  h1 { font-size: 46px; }
  h1 em { display: block; }
  .instrument-copy,
  .comparison,
  .section-intro,
  .reproduce > div:first-child { padding-inline: 34px; overflow: hidden; }
  .comparison-head { align-items: flex-start; flex-direction: column; }
  .delta-grid { grid-template-columns: 1fr; }
  .delta-grid div { padding: 18px 0; border-bottom: 1px solid var(--line); }
  .lane-readout { padding: 38px 24px; }
  .metric-ledger { grid-template-columns: 1fr; }
  .metric-ledger div:nth-child(n) { padding: 16px 0; border-right: 0; }
  .boundary { padding: 28px; grid-template-columns: 1fr; gap: 10px; }
  footer { padding: 34px 0; align-items: flex-start; flex-direction: column; gap: 22px; }
}