:root {
  --ink: #231d31;
  --purple: #21143f;
  --purple-2: #4d2a7a;
  --paper: #f7f5fa;
  --white: #ffffff;
  --muted: #6b6475;
  --line: #dad5e2;
  --cyan: #39bce4;
  --cyan-dark: #167d9e;
  --lime: #cbef5a;
  --coral: #f45b69;
  --orange: #f39a43;
  --yellow: #f5c84b;
  --shell: min(1180px, calc(100vw - 48px));
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
[id] { scroll-margin-top: 90px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Manrope", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
button, input { font: inherit; }
button { color: inherit; }
::selection { background: var(--lime); color: var(--purple); }
.page-shell { width: var(--shell); margin-inline: auto; }
.section-space { padding-block: clamp(80px, 10vw, 150px); }
.dark-section { background: var(--purple); color: var(--white); }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 1000; transform: translateY(-200%); opacity: 0; pointer-events: none; background: var(--lime); color: var(--purple); padding: 10px 14px; border-radius: 8px; font-weight: 800; }
.skip-link:focus { transform: none; opacity: 1; pointer-events: auto; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  min-height: 72px;
  padding: 12px 24px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  color: var(--white);
  background: color-mix(in srgb, var(--purple) 83%, transparent);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,.14);
}
.brand { display: inline-flex; align-items: center; gap: 14px; text-decoration: none; font-weight: 800; font-size: 13px; white-space: nowrap; }
.brand img { width: 92px; height: auto; }
.chapter-nav { justify-self: center; display: flex; gap: 24px; }
.chapter-nav a { text-decoration: none; color: rgba(255,255,255,.72); font-size: 13px; font-weight: 700; }
.chapter-nav a:hover, .chapter-nav a:focus-visible { color: var(--lime); }
.chapter-count { font-family: "IBM Plex Mono", monospace; color: var(--cyan); font-weight: 600; }
.read-progress { position: absolute; left: 0; bottom: -1px; width: 100%; height: 3px; background: transparent; }
.read-progress span { display: block; width: 0; height: 100%; background: linear-gradient(90deg, var(--cyan), var(--lime)); }

.hero { position: relative; min-height: 100svh; display: grid; align-items: end; overflow: hidden; }
.hero-photo, .hero-shade { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-photo { object-fit: cover; object-position: center 48%; filter: saturate(.86) contrast(1.05); }
.hero-shade { background: linear-gradient(100deg, rgba(27,14,57,.98) 4%, rgba(33,20,63,.87) 48%, rgba(33,20,63,.34) 82%), linear-gradient(0deg, rgba(33,20,63,.9), transparent 55%); }
.hero-content { position: relative; z-index: 2; padding-block: 170px 80px; }
.kicker { margin: 0 0 18px; color: var(--cyan); font-family: "IBM Plex Mono", monospace; font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: .09em; }
.kicker.coral { color: var(--coral); }
.kicker.lime { color: var(--lime); }
.kicker.orange { color: var(--orange); }
.kicker.cyan { color: var(--cyan); }
.hero h1 { margin: 0; max-width: 850px; font-family: "Unbounded", sans-serif; font-size: clamp(56px, 9vw, 128px); line-height: .93; letter-spacing: -.06em; }
.hero-thesis { margin: 34px 0 0; color: var(--lime); font-size: clamp(20px, 3vw, 38px); font-weight: 800; }
.hero-actions { margin-top: 52px; display: flex; align-items: center; gap: 28px; color: rgba(255,255,255,.74); font-size: 14px; }
.primary-action { display: inline-flex; align-items: center; justify-content: center; min-height: 54px; padding: 0 22px; border-radius: 999px; background: var(--lime); color: var(--purple); text-decoration: none; font-weight: 800; transition: transform .2s ease, background .2s ease; }
.primary-action:hover { transform: translateY(-2px); background: var(--white); }
.hero-orbit { position: absolute; z-index: 2; right: -4vw; top: 17vh; width: clamp(260px, 32vw, 510px); aspect-ratio: 1; border: 2px solid rgba(57,188,228,.6); border-radius: 50%; display: grid; place-content: center; text-align: center; box-shadow: 0 0 0 38px rgba(57,188,228,.06), 0 0 0 84px rgba(203,239,90,.03); transform: rotate(-8deg); }
.hero-orbit::before { content: ""; position: absolute; width: 20px; aspect-ratio: 1; border-radius: 50%; background: var(--lime); left: 12%; top: 18%; box-shadow: 0 0 28px var(--lime); }
.orbit-label { font-family: "Unbounded", sans-serif; font-size: clamp(70px, 11vw, 170px); line-height: .8; color: rgba(255,255,255,.13); }
.orbit-caption { margin-top: 18px; color: var(--cyan); font-family: "IBM Plex Mono", monospace; text-transform: uppercase; letter-spacing: .18em; }

.section-heading { max-width: 850px; }
.section-heading.compact { max-width: 700px; }
.section-heading h2, .section-heading h3 { margin: 0; font-family: "Unbounded", sans-serif; letter-spacing: -.04em; line-height: 1.08; }
.section-heading h2 { font-size: clamp(38px, 5.2vw, 72px); }
.section-heading h3 { font-size: clamp(30px, 4vw, 52px); }
.section-heading > p:last-child { max-width: 760px; color: var(--muted); font-size: clamp(17px, 2vw, 22px); }
.light-copy > p:last-child { color: rgba(255,255,255,.66); }

.number-line { margin-top: 80px; display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--line); }
.number-line div { padding: 28px 24px 32px 0; display: grid; gap: 4px; }
.number-line div + div { padding-left: 24px; border-left: 1px solid var(--line); }
.number-line strong { font-family: "IBM Plex Mono", monospace; font-size: clamp(28px, 3.5vw, 46px); line-height: 1; color: var(--purple-2); }
.number-line span { color: var(--muted); }
.ratio-statement { margin-top: 50px; display: grid; grid-template-columns: minmax(240px, .7fr) 1.5fr; align-items: baseline; gap: 40px; }
.ratio-statement span { font-family: "Unbounded", sans-serif; font-size: clamp(74px, 11vw, 150px); letter-spacing: -.07em; color: var(--coral); }
.ratio-statement p { margin: 0; font-size: clamp(24px, 3.2vw, 44px); font-weight: 700; line-height: 1.15; }
.rules-block { margin-top: 130px; display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: start; }
.rules-intro { position: sticky; top: 120px; }
.rules-intro h3 { margin: 0; font-family: "Unbounded", sans-serif; font-size: clamp(30px, 3.8vw, 52px); line-height: 1.12; letter-spacing: -.04em; }
.rules-intro > p:last-child { color: var(--muted); font-size: 18px; }
.rules-list { border-top: 1px solid var(--line); }
.rules-list details { border-bottom: 1px solid var(--line); }
.rules-list summary { list-style: none; display: grid; grid-template-columns: 54px 1fr auto; align-items: center; gap: 14px; min-height: 80px; cursor: pointer; font-size: 22px; font-weight: 800; }
.rules-list summary::-webkit-details-marker { display: none; }
.rules-list summary::after { content: "+"; color: var(--cyan-dark); font-family: "IBM Plex Mono", monospace; }
.rules-list details[open] summary::after { content: "−"; }
.rules-list summary span { color: var(--coral); font-family: "IBM Plex Mono", monospace; font-size: 13px; }
.rules-list details p { margin: -4px 0 28px 68px; color: var(--muted); font-size: 18px; }

.audience-grid { display: grid; grid-template-columns: 1fr .92fr; gap: 70px; align-items: start; }
.audience-copy h2 { margin: 0; font-family: "Unbounded", sans-serif; font-size: clamp(38px, 5vw, 68px); line-height: 1.05; letter-spacing: -.045em; }
.decision-roles { margin-top: 70px; display: grid; gap: 42px; }
.decision-roles div { display: grid; grid-template-columns: 90px 1fr; align-items: start; column-gap: 16px; }
.decision-roles span { color: var(--lime); font-family: "IBM Plex Mono", monospace; font-size: 12px; text-transform: uppercase; letter-spacing: .09em; }
.decision-roles strong { font-size: 26px; }
.decision-roles p { grid-column: 2; margin: 6px 0 0; color: rgba(255,255,255,.68); }
.decision-roles div:nth-child(2) span { color: var(--cyan); }
.audience-photo { margin: 0; }
.audience-photo img { width: 100%; aspect-ratio: 4/5; object-fit: cover; border-radius: var(--radius); border: 2px solid var(--cyan); }
.audience-photo figcaption { margin-top: 16px; color: rgba(255,255,255,.58); font-size: 14px; }
.segment-lab { margin-top: 130px; }
.segment-tabs { margin-top: 46px; display: flex; gap: 10px; flex-wrap: wrap; }
.segment-tab { border: 1px solid rgba(255,255,255,.2); background: transparent; color: rgba(255,255,255,.7); min-height: 48px; padding: 0 17px; border-radius: 999px; cursor: pointer; font-weight: 700; }
.segment-tab:hover, .segment-tab:focus-visible { border-color: var(--cyan); color: var(--white); }
.segment-tab.is-active { background: var(--lime); color: var(--purple); border-color: var(--lime); }
.segment-panel { margin-top: 34px; display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid rgba(255,255,255,.2); }
.segment-panel div { padding: 30px 26px 34px 0; }
.segment-panel div + div { padding-left: 26px; border-left: 1px solid rgba(255,255,255,.2); }
.segment-panel span { color: var(--cyan); font-family: "IBM Plex Mono", monospace; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.segment-panel p { margin: 10px 0 0; font-size: 20px; font-weight: 700; }
.segment-note { margin: 26px 0 0; color: rgba(255,255,255,.6); }

.message-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 76px; align-items: center; }
.message-layout figure { margin: 0; }
.message-layout figure img { aspect-ratio: 4/5; object-fit: cover; border-radius: var(--radius); }
.message-layout h2 { margin: 0 0 38px; font-family: "Unbounded", sans-serif; font-size: clamp(50px, 7vw, 92px); color: var(--purple); letter-spacing: -.06em; }
.message-layout blockquote { margin: 0; padding: 26px 0; border-top: 1px solid var(--line); font-size: clamp(24px, 3vw, 38px); font-weight: 700; line-height: 1.22; color: var(--purple-2); }
.message-layout .cyan-quote { color: var(--cyan-dark); }
.proof-line { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 24px; padding-top: 28px; border-top: 1px solid var(--line); }
.proof-line strong { font-family: "IBM Plex Mono", monospace; font-size: 34px; color: var(--orange); white-space: nowrap; }
.proof-line span { color: var(--muted); }
.micro-note { color: var(--coral); font-size: 13px; font-weight: 700; }

.launch { background: var(--white); }
.b2b-rows { margin-top: 60px; border-top: 1px solid var(--line); }
.b2b-rows > div { min-height: 90px; display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; gap: 28px; border-bottom: 1px solid var(--line); }
.b2b-rows strong { color: var(--purple-2); font-size: 19px; }
.b2b-rows span { color: var(--ink); }
.b2b-rows em { color: var(--muted); font-style: normal; }
.inline-callout { margin: 28px 0 0; padding-left: 18px; border-left: 4px solid var(--lime); font-weight: 800; }
.timeline { margin-top: 120px; position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.timeline::before { content: ""; position: absolute; top: 16px; left: 10px; right: 10px; height: 2px; background: var(--line); }
.timeline > div { position: relative; padding-top: 45px; }
.timeline > div::before { content: ""; position: absolute; top: 9px; left: 0; width: 16px; aspect-ratio: 1; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 7px var(--white); }
.timeline > div:nth-child(2)::before { background: var(--orange); }
.timeline > div:nth-child(3)::before { background: var(--cyan); }
.timeline > div:nth-child(4)::before { background: var(--lime); }
.timeline span { color: var(--muted); font-family: "IBM Plex Mono", monospace; font-size: 12px; }
.timeline strong { display: block; margin-top: 10px; font-size: 21px; color: var(--purple); }
.timeline p { color: var(--muted); }
.working-principle { margin-top: 55px; display: grid; grid-template-columns: 180px 1fr; gap: 30px; padding: 30px; border-radius: 20px; background: var(--purple); color: var(--white); }
.working-principle span { color: var(--lime); font-family: "IBM Plex Mono", monospace; text-transform: uppercase; font-size: 12px; }
.working-principle p { margin: 0; font-size: 20px; font-weight: 700; }

.channel-map { margin-top: 70px; border-top: 1px solid rgba(255,255,255,.2); }
.channel-map > div { min-height: 86px; display: grid; grid-template-columns: .8fr 1.6fr 1fr; gap: 28px; align-items: center; border-bottom: 1px solid rgba(255,255,255,.2); }
.channel-map span { color: var(--cyan); font-weight: 800; }
.channel-map strong { font-size: 20px; }
.channel-map p { color: rgba(255,255,255,.62); }
.direct-contours { margin-top: 36px; display: grid; grid-template-columns: 1.3fr repeat(3, 1fr); gap: 22px; align-items: center; padding: 24px; border-radius: 20px; background: rgba(255,255,255,.07); }
.direct-contours span { color: var(--lime); font-weight: 800; }
.direct-contours p { margin: 0; color: rgba(255,255,255,.74); }
.purchase-path { margin-top: 120px; display: grid; grid-template-columns: repeat(6, 1fr); }
.purchase-path div { position: relative; min-height: 190px; padding: 20px 18px; border: 1px solid rgba(255,255,255,.18); }
.purchase-path div:nth-child(even) { background: rgba(255,255,255,.06); }
.purchase-path b { display: block; color: var(--coral); font-family: "IBM Plex Mono", monospace; font-size: 13px; }
.purchase-path strong { display: block; margin-top: 24px; font-size: 18px; }
.purchase-path span { display: block; margin-top: 16px; color: rgba(255,255,255,.58); font-size: 14px; }

.data-chain { margin-top: 70px; display: grid; grid-template-columns: repeat(5, 1fr); border-block: 1px solid var(--line); }
.data-chain div { padding: 28px 20px 26px 0; }
.data-chain div + div { padding-left: 20px; border-left: 1px solid var(--line); }
.data-chain span { color: var(--purple-2); font-size: 20px; font-weight: 800; }
.data-chain p { color: var(--muted); font-size: 14px; }
.tracking-gap { margin-top: 70px; display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 34px; }
.tracking-gap strong { font-family: "Unbounded", sans-serif; font-size: clamp(72px, 10vw, 140px); color: var(--coral); letter-spacing: -.07em; }
.tracking-gap p { max-width: 460px; font-size: 24px; font-weight: 700; }
.launch-gate, .scale-gate { display: grid; grid-template-columns: 200px 1fr; gap: 30px; padding: 30px 0; border-block: 1px solid var(--line); }
.launch-gate span, .scale-gate span { color: var(--orange); font-family: "IBM Plex Mono", monospace; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.launch-gate p, .scale-gate p { margin: 0; font-size: 21px; font-weight: 800; }
.tests-table { margin-top: 120px; }
.tests-table h3 { margin: 0 0 32px; font-family: "Unbounded", sans-serif; font-size: clamp(32px, 4.5vw, 58px); }
.tests-table > div { min-height: 94px; display: grid; grid-template-columns: .55fr 1.7fr 1fr; align-items: center; gap: 28px; border-top: 1px solid var(--line); }
.tests-table > div:last-child { border-bottom: 1px solid var(--line); }
.tests-table strong { color: var(--purple-2); font-size: 20px; }
.tests-table em { color: var(--muted); font-style: normal; font-weight: 700; }
.warning-note { color: var(--coral); font-weight: 800; font-size: 18px; }

.scale { background: #ebe6f3; }
.scale-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; align-items: center; }
.scale-grid h2 { margin: 0; font-family: "Unbounded", sans-serif; font-size: clamp(56px, 8vw, 108px); line-height: .95; letter-spacing: -.06em; color: var(--purple-2); }
.scale-grid .lead { font-size: 22px; max-width: 520px; }
.traffic-calculator { padding: 40px; border-radius: var(--radius); background: var(--purple); color: var(--white); }
.traffic-calculator label { display: flex; justify-content: space-between; gap: 20px; color: rgba(255,255,255,.68); }
.traffic-calculator output { color: var(--lime); font-family: "IBM Plex Mono", monospace; font-weight: 700; }
.traffic-calculator input { width: 100%; margin-block: 36px; accent-color: var(--lime); }
.traffic-calculator > strong { display: block; font-family: "Unbounded", sans-serif; font-size: clamp(48px, 6vw, 82px); letter-spacing: -.06em; color: var(--cyan); }
.traffic-calculator > span { color: rgba(255,255,255,.66); }
.range-labels { margin-top: 32px; display: flex; justify-content: space-between; color: rgba(255,255,255,.45); font-family: "IBM Plex Mono", monospace; font-size: 12px; }
.scale-decision { margin-top: 70px; padding-top: 34px; border-top: 1px solid #c9c1d5; font-size: 25px; font-weight: 800; }
.economics { margin-top: 140px; }
.formula { margin-top: 60px; padding: 34px; border-radius: 22px; background: var(--purple); color: var(--white); font-size: clamp(21px, 2.5vw, 31px); font-weight: 700; }
.formula span { color: var(--lime); }
.economics-rows { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; margin-top: 50px; }
.economics-rows strong { color: var(--coral); font-size: 20px; }
.economics-rows p { color: var(--muted); }
.scale-gate { margin-top: 50px; border-color: #c9c1d5; }

.risk-rows { margin-top: 70px; border-top: 1px solid var(--line); }
.risk-rows article { display: grid; grid-template-columns: 80px 1fr; gap: 30px; padding: 38px 0; border-bottom: 1px solid var(--line); }
.risk-rows article > span { color: var(--coral); font-family: "IBM Plex Mono", monospace; }
.risk-rows h3 { margin: 0; font-family: "Unbounded", sans-serif; font-size: clamp(22px, 3vw, 34px); letter-spacing: -.03em; }
.risk-rows p { margin: 12px 0 0; max-width: 900px; color: var(--muted); font-size: 18px; }

.diagnostic-order { margin: 70px 0 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.2); }
.diagnostic-order li { min-height: 90px; display: grid; grid-template-columns: 70px 1fr 1.8fr; align-items: center; gap: 24px; border-bottom: 1px solid rgba(255,255,255,.2); }
.diagnostic-order span { color: var(--coral); font-family: "IBM Plex Mono", monospace; }
.diagnostic-order strong { font-size: 20px; }
.diagnostic-order p { color: rgba(255,255,255,.62); }
.time-machine { margin-top: 130px; display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: start; }
.time-machine h3 { margin: 0; font-family: "Unbounded", sans-serif; font-size: clamp(32px, 4.5vw, 58px); line-height: 1.08; letter-spacing: -.04em; }
.time-machine > div:first-child > p:last-child { color: rgba(255,255,255,.6); }
.machine-controls { display: grid; gap: 12px; }
.machine-controls button { min-height: 58px; text-align: left; padding: 0 20px; border-radius: 12px; border: 1px solid rgba(255,255,255,.18); background: rgba(255,255,255,.04); cursor: pointer; font-weight: 700; }
.machine-controls button:hover, .machine-controls button:focus-visible { border-color: var(--cyan); }
.machine-controls button.is-active { background: var(--coral); border-color: var(--coral); color: var(--white); }
.time-machine output { grid-column: 2; padding: 24px; border-radius: 14px; background: var(--yellow); color: var(--purple); font-size: 20px; font-weight: 800; }
.final-rule { margin: 60px 0 0; padding-top: 28px; border-top: 1px solid rgba(255,255,255,.2); color: var(--lime); font-size: clamp(23px, 3vw, 36px); font-weight: 800; }
.final-rule span { display: block; margin-bottom: 10px; color: var(--cyan); font-family: "IBM Plex Mono", monospace; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }

footer { background: #160b2c; color: rgba(255,255,255,.62); padding-block: 32px; }
footer .page-shell { display: flex; align-items: center; gap: 24px; }
footer img { width: 100px; }
footer p { margin: 0; }
footer a { margin-left: auto; color: var(--lime); text-decoration: none; font-weight: 800; }

:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }

@media (max-width: 980px) {
  :root { --shell: min(100% - 36px, 760px); }
  .chapter-nav { display: none; }
  .site-header { grid-template-columns: 1fr auto; }
  .brand span { display: none; }
  .hero-orbit { right: -16vw; opacity: .7; }
  .number-line { grid-template-columns: 1fr 1fr; }
  .number-line div:nth-child(3) { border-left: 0; }
  .number-line div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .ratio-statement, .rules-block, .audience-grid, .message-layout, .scale-grid, .time-machine { grid-template-columns: 1fr; }
  .rules-intro { position: static; }
  .audience-photo { max-width: 620px; }
  .message-layout figure { max-width: 580px; }
  .timeline { grid-template-columns: 1fr 1fr; }
  .timeline::before { display: none; }
  .channel-map > div, .b2b-rows > div { grid-template-columns: 1fr; gap: 5px; padding-block: 22px; }
  .purchase-path { grid-template-columns: repeat(3, 1fr); }
  .direct-contours { grid-template-columns: 1fr; }
  .data-chain { grid-template-columns: repeat(3, 1fr); }
  .data-chain div:nth-child(4) { border-left: 0; border-top: 1px solid var(--line); }
  .data-chain div:nth-child(n+4) { border-top: 1px solid var(--line); }
  .tests-table > div { grid-template-columns: .6fr 1.4fr; padding-block: 22px; }
  .tests-table em { grid-column: 2; }
  .economics-rows { grid-template-columns: 1fr 1fr; }
  .time-machine output { grid-column: 1; }
}

@media (max-width: 650px) {
  :root { --shell: min(100% - 28px, 520px); --radius: 20px; }
  body { font-size: 15px; }
  .site-header { min-height: 62px; padding-inline: 14px; }
  .brand img { width: 80px; }
  .section-space { padding-block: 78px; }
  .hero { min-height: 820px; }
  .hero-content { padding-block: 150px 54px; }
  .hero h1 { font-size: clamp(46px, 14vw, 68px); }
  .hero-thesis { max-width: 320px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 15px; }
  .hero-orbit { width: 270px; top: 105px; right: -120px; }
  .section-heading h2 { font-size: 36px; }
  .number-line { margin-top: 50px; grid-template-columns: 1fr; }
  .number-line div, .number-line div + div { padding: 21px 0; border-left: 0; border-top: 1px solid var(--line); }
  .number-line div:first-child { border-top: 0; }
  .ratio-statement { gap: 8px; }
  .ratio-statement span { font-size: 84px; }
  .ratio-statement p { font-size: 24px; }
  .rules-block, .segment-lab, .time-machine { margin-top: 90px; gap: 45px; }
  .rules-list summary { grid-template-columns: 42px 1fr auto; font-size: 18px; }
  .rules-list details p { margin-left: 56px; }
  .audience-grid { gap: 50px; }
  .audience-copy h2 { font-size: 38px; }
  .decision-roles div { grid-template-columns: 74px 1fr; }
  .segment-tabs { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 8px; scrollbar-width: thin; }
  .segment-tab { flex: 0 0 auto; }
  .segment-panel { grid-template-columns: 1fr; }
  .segment-panel div, .segment-panel div + div { padding: 22px 0; border-left: 0; border-top: 1px solid rgba(255,255,255,.2); }
  .segment-panel div:first-child { border-top: 0; }
  .message-layout { gap: 46px; }
  .proof-line { grid-template-columns: 1fr; gap: 5px; }
  .timeline { grid-template-columns: 1fr; gap: 8px; }
  .working-principle { grid-template-columns: 1fr; }
  .purchase-path { grid-template-columns: 1fr 1fr; }
  .purchase-path div { min-height: 168px; }
  .data-chain { grid-template-columns: 1fr; }
  .data-chain div, .data-chain div + div { padding: 20px 0; border-left: 0; border-top: 1px solid var(--line); }
  .data-chain div:first-child { border-top: 0; }
  .tracking-gap { grid-template-columns: 1fr; gap: 0; }
  .launch-gate, .scale-gate { grid-template-columns: 1fr; gap: 12px; }
  .tests-table > div { grid-template-columns: 1fr; gap: 8px; padding-block: 22px; }
  .tests-table em { grid-column: 1; }
  .traffic-calculator { padding: 26px; }
  .scale-grid h2 { font-size: 62px; }
  .economics-rows { grid-template-columns: 1fr; gap: 12px; }
  .risk-rows article { grid-template-columns: 44px 1fr; gap: 12px; }
  .diagnostic-order li { grid-template-columns: 44px 1fr; gap: 12px; padding-block: 22px; }
  .diagnostic-order p { grid-column: 2; margin: 0; }
  footer .page-shell { align-items: flex-start; flex-wrap: wrap; }
  footer p { flex: 1 1 200px; }
  footer a { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}