@font-face {
  font-family: "Open Sauce";
  src: url("assets/fonts/OpenSauceOne-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Open Sauce";
  src: url("assets/fonts/OpenSauceOne-Medium.ttf") format("truetype");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Open Sauce";
  src: url("assets/fonts/OpenSauceOne-SemiBold.ttf") format("truetype");
  font-weight: 650;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Open Sauce";
  src: url("assets/fonts/OpenSauceOne-Bold.ttf") format("truetype");
  font-weight: 750;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Open Sauce";
  src: url("assets/fonts/OpenSauceOne-ExtraBold.ttf") format("truetype");
  font-weight: 850;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Playfair Display";
  src: url("assets/fonts/PlayfairDisplay-Italic.ttf") format("truetype");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Playfair Display";
  src: url("assets/fonts/PlayfairDisplay-BoldItalic.ttf") format("truetype");
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}

:root {
  --black: #000000;
  --dark-blue: #4F6D8A;
  --gray-blue: #90A2B9;
  --off-white: #EFEFEF;
  --neon-blue: var(--gray-blue);
  --signal-amber: #C9974A;
  --bg: var(--black);
  --panel: rgba(79, 109, 138, 0.14);
  --panel-2: rgba(79, 109, 138, 0.22);
  --ink: var(--off-white);
  --muted: rgba(239, 239, 239, 0.72);
  --dim: rgba(144, 162, 185, 0.66);
  --line: rgba(144, 162, 185, 0.18);
  --blue: var(--neon-blue);
  --blue-dark: var(--dark-blue);
  --active: var(--neon-blue);
  --site-header-h: 70px;
  --frame-gap-y: clamp(24px, 4vw, 58px);
  --font-primary: "Open Sauce", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-secondary: "Playfair Display", "Times New Roman", serif;
  --gutter: clamp(20px, 5vw, 72px);
  --page-frame-x: clamp(24px, 6vw, 112px);
  --scrolly-frame-x: clamp(16px, 2.4vw, 52px);
  --scrolly-frame-top: clamp(96px, 12vh, 136px);
  --scrolly-frame-bottom: clamp(32px, 4vh, 64px);
  --scrolly-frame-w: min(
    calc(100vw - var(--scrolly-frame-x) * 2),
    calc((100vh - var(--scrolly-frame-top) - var(--scrolly-frame-bottom)) * 16 / 9)
  );
  --scrolly-frame-h: calc(var(--scrolly-frame-w) * 9 / 16);
  --scrolly-frame-left: calc((100vw - var(--scrolly-frame-w)) / 2);
  --max: 1240px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

.page-top-anchor {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
}

main > section,
footer {
  scroll-margin-top: calc(var(--site-header-h) + 20px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-primary);
  line-height: 1.5;
  letter-spacing: 0;
}

img,
video {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(18px);
}

.site-nav {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  height: 70px;
  width: min(1320px, 100%);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-weight: 650;
  letter-spacing: 0;
}

.brand__mark {
  width: 38px;
  height: 38px;
  object-fit: contain;
  background: var(--black);
}

.brand__name {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  color: var(--off-white);
  font-size: 0.92rem;
  font-weight: 650;
}

.brand__name span {
  position: relative;
  color: var(--dim);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.brand__name span::before {
  content: "/";
  margin-right: 12px;
  color: var(--dim);
}

.nav-links {
  justify-self: center;
  display: flex;
  gap: clamp(16px, 2.3vw, 32px);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0;
}

.nav-links a,
.header-cta {
  transition: color 180ms ease, border-color 180ms ease, background 180ms ease;
}

.nav-links a {
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, rgba(144, 162, 185, 0) 0%, rgba(144, 162, 185, 0.92) 45%, rgba(144, 162, 185, 0) 100%);
  transform: scaleX(0.24);
  transform-origin: left center;
  opacity: 0;
  transition: transform 220ms ease, opacity 220ms ease;
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-links a:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

.bluechips-link {
  color: var(--neon-blue);
  font-weight: 400;
  letter-spacing: 0;
}

.header-cta {
  border: 1px solid rgba(144, 162, 185, 0.28);
  padding: 10px 14px;
  color: var(--active);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.header-cta:hover {
  border-color: rgba(144, 162, 185, 0.48);
  background: rgba(144, 162, 185, 0.08);
  box-shadow: 0 0 0 1px rgba(144, 162, 185, 0.2) inset, 0 0 18px rgba(144, 162, 185, 0.16);
}

.hero {
  position: relative;
  width: min(calc(100% - var(--page-frame-x) * 2), 1440px);
  min-height: calc(100vh - var(--site-header-h) - var(--frame-gap-y) * 2);
  margin: calc(var(--site-header-h) + var(--frame-gap-y)) auto var(--frame-gap-y);
  border: 1px solid rgba(144, 162, 185, 0.2);
  overflow: hidden;
  display: grid;
  align-items: end;
  padding: clamp(72px, 10vh, 118px) clamp(28px, 5vw, 72px) clamp(122px, 14vh, 168px);
  background: transparent;
}

.hero--retired,
.problem--retired {
  display: none;
}

.section-scroll-frame {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.hero > .hero__video {
  display: none;
}

.hero__video,
.validation__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.capture .hero {
  background: url("assets/media/landing-hero-horizon-28bc.png") center / cover no-repeat;
}

.capture .scrolly__media {
  background: url("assets/media/scrolly-01-mesh.png") center / cover no-repeat;
}

.capture .validation {
  background: url("assets/media/landing-math-certificate.webp") center / cover no-repeat;
}

.capture video {
  visibility: hidden;
}

.hero__shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(0, 0, 0, 0.46);
}

.hero__grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0;
}

.hero__coords {
  position: absolute;
  top: clamp(34px, 4vw, 56px);
  left: clamp(28px, 5vw, 72px);
  right: clamp(28px, 5vw, 72px);
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  color: var(--dim);
  font-size: 0.64rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero__content {
  position: relative;
  z-index: 2;
  width: min(1080px, 100%);
  margin: 0 auto;
  transform: translateY(calc(-1 * clamp(42px, 7vh, 92px)));
}

.eyebrow,
.card-kicker,
.step-num,
.metric__label {
  color: var(--active);
  font-size: 0.68rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.hero__pill {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border: 1px solid rgba(144, 162, 185, 0.36);
  padding: 8px 12px;
  background: rgba(0, 0, 0, 0.32);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 20px;
  max-width: 920px;
  font-size: clamp(2.45rem, 4.25vw, 4.35rem);
  line-height: 1;
  letter-spacing: 0;
}

h2 {
  font-size: clamp(1.75rem, 2.75vw, 3.15rem);
  line-height: 1.04;
  letter-spacing: 0;
}

h3 {
  font-size: clamp(1rem, 1.25vw, 1.22rem);
  line-height: 1.16;
}

.hero__lede {
  max-width: 760px;
  color: var(--ink);
  font-size: clamp(0.98rem, 1.15vw, 1.15rem);
  line-height: 1.62;
}

.font-accent {
  font-family: var(--font-secondary);
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--neon-blue);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 15px;
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.01em;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button--primary {
  background: var(--neon-blue);
  color: var(--black);
}

.button--ghost {
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(239, 239, 239, 0.04);
}

.button:hover {
  transform: translateY(-1px);
}

.button--primary:hover {
  box-shadow: 0 8px 20px rgba(144, 162, 185, 0.24), 0 0 0 1px rgba(144, 162, 185, 0.36) inset;
}

.button--ghost:hover {
  border-color: rgba(144, 162, 185, 0.52);
  background: rgba(144, 162, 185, 0.1);
  box-shadow: 0 0 16px rgba(144, 162, 185, 0.14);
}

.briefing-email-toast {
  position: fixed;
  left: clamp(14px, 2vw, 28px);
  bottom: clamp(14px, 2vw, 26px);
  z-index: 80;
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 8px 11px;
  border: 1px solid rgba(144, 162, 185, 0.38);
  background:
    linear-gradient(90deg, rgba(144, 162, 185, 0.22), rgba(144, 162, 185, 0.04)),
    rgba(0, 0, 0, 0.82);
  box-shadow: 0 0 0 1px rgba(144, 162, 185, 0.12) inset, 0 10px 28px rgba(0, 0, 0, 0.42);
  color: var(--off-white);
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  pointer-events: none;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 160ms ease, transform 160ms ease;
}

body.is-showing-briefing-email .briefing-email-toast,
body:has(.briefing-email-trigger:is(:hover, :focus-visible)) .briefing-email-toast {
  opacity: 1;
  transform: translateY(0);
}

.hero-panel {
  position: absolute;
  left: 50%;
  bottom: clamp(24px, 4vh, 38px);
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(4, minmax(150px, 1fr));
  width: min(1180px, calc(100% - clamp(56px, 10vw, 144px)));
  transform: translateX(-50%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.54);
  backdrop-filter: blur(16px);
}

.hero-panel > div {
  padding: 14px 18px;
  border-right: 1px solid var(--line);
}

.hero-panel > div:last-child {
  border-right: 0;
}

.hero-panel strong {
  display: block;
  margin: 6px 0 3px;
  font-size: clamp(0.92rem, 1.1vw, 1.12rem);
  line-height: 1;
}

.hero-panel span:not(.metric__label) {
  color: var(--muted);
  font-size: 0.76rem;
}

.brief-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  border-block: 1px solid var(--line);
  background: var(--line);
}

.brief-card {
  min-height: 330px;
  padding: clamp(24px, 4vw, 48px);
  background: rgba(0, 0, 0, 0.94);
}

.brief-card--old {
  background: rgba(79, 109, 138, 0.14);
}

.brief-card--new {
  background: rgba(79, 109, 138, 0.20);
}

.brief-card h2 {
  max-width: 620px;
  margin: 18px 0;
}

.brief-card p,
.section p {
  color: var(--muted);
  font-size: clamp(0.92rem, 1vw, 1.03rem);
  line-height: 1.62;
}

.section {
  position: relative;
  width: min(calc(100% - var(--scrolly-frame-x) * 2), 1540px);
  margin: var(--frame-gap-y) auto;
  border: 1px solid rgba(144, 162, 185, 0.2);
  padding: clamp(52px, 7vw, 96px) clamp(28px, 5vw, 72px);
  overflow: hidden;
  background: var(--black);
}

.section__head {
  max-width: var(--max);
  margin: 0 auto 34px;
}

.section__head--wide {
  max-width: 1000px;
  margin-left: 0;
}

.intro {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(320px, 1fr);
  gap: clamp(28px, 7vw, 110px);
  max-width: calc(var(--max) + (var(--gutter) * 2));
  margin: 0 auto;
}

.intro__copy {
  align-self: end;
  max-width: 700px;
}

.problem {
  overflow: hidden;
  isolation: isolate;
  padding-top: clamp(72px, 7vw, 104px);
  padding-bottom: clamp(280px, 30vw, 460px);
  min-height: auto;
  background: transparent;
}

.problem__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background: transparent;
  opacity: 0;
}

.problem__scroll-frame {
  z-index: -2;
}

.problem::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(0, 0, 0, 0.38);
}

.problem__inner {
  position: relative;
  z-index: 1;
  width: min(1120px, 100%);
  margin: 0 auto;
  border: 1px solid rgba(144, 162, 185, 0.2);
  padding: clamp(24px, 3.2vw, 46px);
  background: rgba(0, 0, 0, 0.82);
}

.problem__head {
  max-width: 940px;
}

.problem__eyebrow {
  position: relative;
  padding-left: 38px;
}

.problem__eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 24px;
  height: 1px;
  background: var(--neon-blue);
}

.problem__head h2 {
  max-width: 940px;
  margin-bottom: 18px;
}

.problem__head p {
  max-width: 780px;
}

.problem-proof {
  display: grid;
  grid-template-columns: minmax(280px, 0.78fr) minmax(320px, 1fr);
  gap: clamp(22px, 4vw, 54px);
  margin: 30px 0 28px;
  border-block: 1px solid rgba(144, 162, 185, 0.28);
  padding: clamp(16px, 2.2vw, 24px) 0;
  background: transparent;
}

.problem-proof__metric,
.problem-proof > p {
  padding-inline: clamp(12px, 2vw, 24px);
  background: transparent;
}

.problem-proof__metric span,
.problem-proof__row span {
  display: block;
  color: var(--dim);
  font-size: 0.66rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.problem-proof__metric strong {
  display: block;
  margin-top: 12px;
  font-size: clamp(2.85rem, 4.8vw, 4.35rem);
  line-height: 0.9;
}

.problem-proof > p {
  align-self: center;
  color: var(--off-white);
  font-size: clamp(0.96rem, 1.18vw, 1.08rem);
  line-height: 1.52;
}

.problem-proof__row {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  border-top: 1px solid rgba(144, 162, 185, 0.22);
  padding-top: 16px;
}

.problem-proof__row div {
  border-bottom: 1px solid rgba(144, 162, 185, 0.22);
  padding: 0 12px 12px;
  background: transparent;
}

.problem-proof__row strong {
  display: block;
  margin-top: 8px;
  color: var(--off-white);
}

.loop-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(14px, 2vw, 28px);
  margin: 0 0 32px;
}

.loop-cards article {
  min-height: 150px;
  border: 1px solid rgba(144, 162, 185, 0.22);
  padding: 18px;
  background: rgba(144, 162, 185, 0.04);
}

.loop-cards span {
  color: var(--neon-blue);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.16em;
}

.loop-cards h3 {
  margin: 24px 0 10px;
}

.loop-cards p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.cost-note {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(24px, 5vw, 70px);
  border-block: 1px solid rgba(144, 162, 185, 0.24);
  padding: 22px 0;
  background: transparent;
}

.cost-note span {
  color: var(--neon-blue);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.cost-note p {
  margin: 0;
  max-width: 920px;
  color: var(--off-white);
  font-size: clamp(0.98rem, 1.18vw, 1.08rem);
  line-height: 1.52;
}

.scrolly {
  position: relative;
  min-height: auto;
  margin-top: 0;
}

.scrolly__media {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  background: var(--black);
}

.scrolly__media::before {
  content: "";
  position: absolute;
  top: var(--scrolly-frame-top);
  left: var(--scrolly-frame-left);
  width: var(--scrolly-frame-w);
  height: var(--scrolly-frame-h);
  z-index: 7;
  border: 1px solid rgba(144, 162, 185, 0.2);
  pointer-events: none;
}

.scrolly__media::after {
  content: "";
  position: absolute;
  top: var(--scrolly-frame-top);
  left: var(--scrolly-frame-left);
  width: var(--scrolly-frame-w);
  height: var(--scrolly-frame-h);
  z-index: 4;
  background: rgba(0, 0, 0, 0.58);
  border: 1px solid rgba(0, 0, 0, 0.92);
  pointer-events: none;
}

.scrolly.is-transitioning .scrolly__media::after {
  background: rgba(0, 0, 0, 0.38);
}

.scrolly-canvas,
.media-panel {
  position: absolute;
  top: var(--scrolly-frame-top);
  left: var(--scrolly-frame-left);
  width: var(--scrolly-frame-w);
  height: var(--scrolly-frame-h);
  object-fit: cover;
  pointer-events: none;
}

.scrolly-canvas {
  z-index: 3;
  filter: contrast(1.08) saturate(1.04);
}

.media-panel {
  display: none;
}

.scrolly-progress {
  position: absolute;
  left: var(--scrolly-frame-left);
  width: var(--scrolly-frame-w);
  top: calc(var(--scrolly-frame-top) + var(--scrolly-frame-h) + 10px);
  z-index: 8;
  height: 1px;
  background: rgba(144, 162, 185, 0.18);
  overflow: hidden;
}

.scrolly-progress span {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: var(--neon-blue);
}

.scrolly__steps {
  position: sticky;
  top: 0;
  z-index: 9;
  height: 100vh;
  margin-top: -100vh;
  padding: 0 var(--gutter);
  pointer-events: auto;
}

.scrolly__spacer {
  height: 720vh;
}

.story-step {
  position: absolute;
  top: var(--scrolly-frame-top);
  left: var(--scrolly-frame-left);
  display: grid;
  gap: 10px;
  width: min(520px, calc(var(--scrolly-frame-w) * 0.46));
  height: var(--scrolly-frame-h);
  align-content: start;
  padding: clamp(18px, 2.4vw, 34px);
  opacity: 0;
  transform: translateY(18px);
  will-change: opacity, transform;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.55);
  pointer-events: none;
}

.story-step--hero {
  width: min(1080px, var(--scrolly-frame-w));
  align-content: end;
  padding-bottom: clamp(82px, 10vh, 132px);
}

.story-step--hero h1 {
  max-width: 900px;
  margin-bottom: 16px;
}

.story-step--hero p:not(.eyebrow) {
  max-width: 720px;
}

.story-metrics {
  position: relative;
  left: auto;
  bottom: auto;
  width: min(100%, 1000px);
  margin-top: clamp(28px, 5vh, 54px);
  transform: none;
  backdrop-filter: none;
}

.story-step--problem {
  width: min(680px, calc(var(--scrolly-frame-w) * 0.56));
}

.story-step[data-media="mesh"] {
  width: min(560px, calc(var(--scrolly-frame-w) * 0.5));
}

.story-step[data-media="surface"] {
  width: min(500px, calc(var(--scrolly-frame-w) * 0.44));
  left: auto;
  right: var(--scrolly-frame-left);
  align-content: end;
}

.story-step[data-media="certificate"] {
  width: min(600px, calc(var(--scrolly-frame-w) * 0.52));
  left: auto;
  right: var(--scrolly-frame-left);
  align-content: center;
}

.story-step--problem h2 {
  font-size: clamp(1.65rem, 2.4vw, 2.8rem);
}

.compact-proof {
  display: grid;
  gap: 6px;
  margin-top: 10px;
  padding-top: 16px;
  border-top: 0;
}

.compact-proof strong {
  font-size: clamp(1.7rem, 3vw, 3rem);
  line-height: 1;
}

.compact-proof span {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.story-step:nth-child(even) {
  left: var(--scrolly-frame-left);
  right: auto;
}

.story-step[data-media="range"] {
  left: var(--scrolly-frame-left);
  right: auto;
  top: var(--scrolly-frame-top);
  bottom: auto;
  width: min(520px, calc(var(--scrolly-frame-w) * 0.42));
  height: var(--scrolly-frame-h);
  align-content: end;
}

.story-step[data-media="range"] h2 {
  font-size: clamp(1.55rem, 2.25vw, 2.5rem);
}

.story-step[data-media="range"] p {
  max-width: 440px;
}

.story-step[data-media="field"] {
  width: min(650px, calc(var(--scrolly-frame-w) * 0.58));
  left: auto;
  right: var(--scrolly-frame-left);
  align-content: end;
}

.story-step[data-media="convergence"] {
  width: min(540px, calc(var(--scrolly-frame-w) * 0.47));
  align-content: end;
}

.story-step.is-active {
  transform: translateY(0);
  pointer-events: auto;
}

.story-step h2 {
  max-width: 680px;
  margin-bottom: 4px;
  font-size: clamp(1.72rem, 2.5vw, 2.9rem);
  line-height: 1.03;
  letter-spacing: -0.005em;
}

.story-step p {
  max-width: 460px;
  color: var(--off-white);
  font-size: clamp(0.88rem, 0.98vw, 1rem);
  line-height: 1.52;
  color: rgba(239, 239, 239, 0.88);
}

.scrolly .step-num {
  display: none;
}

.method {
  position: relative;
  isolation: isolate;
  min-height: auto;
  display: block;
}

.method__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background: url("assets/media/landing-boundary-native.webp") center / cover no-repeat;
  opacity: 0.22;
}

.method::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(0, 0, 0, 0.66);
}

.method__content {
  width: min(690px, 100%);
  margin-left: 0;
}

.method__lede {
  margin-bottom: 34px;
  color: var(--muted);
  font-size: clamp(1rem, 1.18vw, 1.14rem);
  line-height: 1.62;
}

.method-list {
  display: grid;
  gap: 24px;
}

.method-list article {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 18px;
  transition: transform 180ms ease;
}

.method-list > article > span {
  color: var(--neon-blue);
  padding-top: 4px;
}

.method-list h3 {
  margin-bottom: 8px;
}

.method-list p {
  margin: 0;
  color: var(--muted);
}

.method-list article:hover {
  transform: translateX(4px);
}

.console {
  position: relative;
  min-height: 540px;
  border: 1px solid var(--line);
  padding: clamp(20px, 4vw, 34px);
  overflow: hidden;
  background: rgba(79, 109, 138, 0.14);
}

.console__top,
.readouts {
  position: relative;
  z-index: 2;
}

.console__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 400;
}

.console__top strong {
  color: var(--active);
  font-size: 1.5rem;
}

input[type="range"] {
  position: relative;
  z-index: 2;
  width: 100%;
  margin: 28px 0 24px;
  accent-color: var(--neon-blue);
}

.readouts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.readouts div {
  padding: 16px;
  background: rgba(0, 0, 0, 0.66);
}

.readouts span {
  display: block;
  color: var(--dim);
  font-size: 0.75rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.readouts strong {
  display: block;
  margin-top: 8px;
  color: var(--ink);
  font-size: clamp(1rem, 1.6vw, 1.28rem);
}

.boundary-viz {
  position: absolute;
  inset: 150px 24px 22px;
  display: grid;
  place-items: center;
}

.shape {
  position: absolute;
  width: min(72%, 500px);
  aspect-ratio: 2.9 / 1;
  clip-path: polygon(0 46%, 12% 25%, 68% 18%, 100% 50%, 68% 82%, 12% 75%);
}

.shape--mesh {
  border: 1px solid rgba(239, 239, 239, 0.18);
  background: rgba(79, 109, 138, 0.18);
  opacity: 0.6;
}

.shape--boundary {
  border: 2px solid var(--neon-blue);
  background: rgba(144, 162, 185, 0.12);
  transition: transform 180ms ease;
}

.pulse-ring {
  position: absolute;
  width: min(88%, 620px);
  aspect-ratio: 1;
  border: 1px solid rgba(144, 162, 185, 0.18);
  animation: breathe 4200ms ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { transform: scale(0.94); opacity: 0.5; }
  50% { transform: scale(1.04); opacity: 1; }
}

.capabilities {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

.capabilities::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background: url("assets/media/landing-differential-computation.webp") center / cover no-repeat;
  opacity: 0.10;
  pointer-events: none;
}

.capabilities::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(0, 0, 0, 0.70);
  pointer-events: none;
}

.cap-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.cap-card {
  position: relative;
  overflow: hidden;
  min-height: 190px;
  grid-column: span 3;
  padding: clamp(20px, 2.5vw, 30px);
  background: rgba(0, 0, 0, 0.78);
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.cap-card--large {
  grid-column: span 6;
  min-height: 210px;
  background: rgba(79, 109, 138, 0.14);
}

.cap-card--large::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("assets/media/landing-geometry-claim.webp") center / cover no-repeat;
  opacity: 0.12;
  pointer-events: none;
}

.cap-card > * {
  position: relative;
}

.cap-card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(144, 162, 185, 0) 0%, rgba(144, 162, 185, 0.76) 50%, rgba(144, 162, 185, 0) 100%);
  transform: scaleX(0.3);
  opacity: 0;
  transition: transform 220ms ease, opacity 220ms ease;
}

.cap-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.38), 0 0 0 1px rgba(144, 162, 185, 0.2) inset;
}

.cap-card:hover::after {
  opacity: 1;
  transform: scaleX(1);
}

.cap-card span,
.engage-card span {
  color: var(--neon-blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.72rem;
}

.cap-card h3 {
  margin: 18px 0 10px;
}

.cap-card p {
  color: var(--muted);
  max-width: 620px;
}

.faq {
  position: relative;
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(520px, 1.18fr);
  gap: clamp(34px, 6vw, 84px);
  align-items: start;
  isolation: isolate;
  overflow: hidden;
  background: #000;
}

.faq__intro {
  position: sticky;
  top: calc(var(--site-header-h) + 38px);
}

.faq__intro p:not(.eyebrow) {
  max-width: 590px;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.15vw, 1.12rem);
  line-height: 1.62;
}

.faq__media {
  position: relative;
  margin: clamp(24px, 3vw, 36px) 0 0;
  border: 1px solid rgba(144, 162, 185, 0.22);
  background: rgba(0, 0, 0, 0.72);
  overflow: hidden;
}

.faq__media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.08);
}

.faq__list {
  border-top: 1px solid rgba(144, 162, 185, 0.24);
}

.faq__group {
  border-bottom: 1px solid rgba(144, 162, 185, 0.28);
  padding: clamp(24px, 3vw, 34px) 0;
}

.faq__group:first-child {
  padding-top: 0;
}

.faq__group:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.faq__group-kicker {
  margin: 0 0 8px;
  color: var(--neon-blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.faq__group h3 {
  margin: 0 0 16px;
  color: var(--off-white);
  font-size: clamp(1.25rem, 2vw, 1.85rem);
}

.faq__list details {
  position: relative;
  border-top: 1px solid rgba(144, 162, 185, 0.16);
  background: rgba(0, 0, 0, 0.34);
  transition: background 180ms ease, box-shadow 180ms ease;
}

.faq__list details::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: rgba(144, 162, 185, 0.78);
  opacity: 0;
  transition: opacity 180ms ease;
}

.faq__list details:hover,
.faq__list details[open] {
  background: rgba(79, 109, 138, 0.13);
  box-shadow: 0 0 0 1px rgba(144, 162, 185, 0.08) inset;
}

.faq__list details:hover::before,
.faq__list details[open]::before {
  opacity: 1;
}

.faq__list summary {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: center;
  min-height: 74px;
  padding: 21px clamp(18px, 2.6vw, 30px);
  color: var(--off-white);
  cursor: pointer;
  list-style: none;
  font-size: clamp(0.98rem, 1.38vw, 1.2rem);
  font-weight: 650;
  letter-spacing: -0.02em;
}

.faq__list summary::-webkit-details-marker {
  display: none;
}

.faq__list summary::after {
  content: "+";
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid rgba(144, 162, 185, 0.28);
  color: var(--neon-blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1.08rem;
  font-weight: 400;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.faq__list details[open] summary::after {
  transform: rotate(45deg);
  border-color: rgba(144, 162, 185, 0.52);
  background: rgba(144, 162, 185, 0.10);
}

.faq__list p,
.faq__list li {
  color: var(--muted);
  line-height: 1.68;
}

.faq__list details > p,
.faq__list details > ul {
  max-width: 790px;
  margin: -4px 0 0;
  padding: 0 clamp(18px, 2.6vw, 30px) 24px;
}

.faq__list details > ul {
  display: grid;
  gap: 10px;
  margin-top: 0;
  padding-left: clamp(34px, 4.4vw, 52px);
}

.faq__list strong {
  color: var(--off-white);
  font-weight: 650;
}

.validation {
  min-height: auto;
  display: grid;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}

.validation::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(0, 0, 0, 0.68);
}

.validation__video {
  z-index: -2;
}

.validation__content {
  width: min(860px, 100%);
}

.proof-split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(30px, 5vw, 76px);
  margin-top: 38px;
  border-block: 1px solid var(--line);
  padding: 28px 0;
}

.proof-split span {
  display: inline-flex;
  width: fit-content;
  border: 1px solid rgba(144, 162, 185, 0.30);
  padding: 8px 12px;
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.68rem;
  font-weight: 400;
}

.proof-split p {
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.engage {
  display: block;
  position: relative;
  isolation: isolate;
}

.engage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: url("assets/media/landing-secure-briefing.webp") center / cover no-repeat;
  opacity: 0.14;
}

.engage__copy p {
  max-width: 760px;
  font-size: clamp(0.98rem, 1.15vw, 1.12rem);
  line-height: 1.62;
}

.engage__options {
  display: grid;
  gap: 12px;
}

.engage-card {
  display: grid;
  gap: 8px;
  min-height: 142px;
  border: 1px solid var(--line);
  padding: 20px;
  background: rgba(79, 109, 138, 0.18);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.engage-card:hover {
  transform: translateY(-3px);
  border-color: rgba(144, 162, 185, 0.40);
  background: rgba(79, 109, 138, 0.22);
}

.engage-card--primary {
  background: rgba(79, 109, 138, 0.22);
}

.engage-card h3 {
  margin: 0;
}

.engage-card p {
  margin: 0;
  color: var(--muted);
}

.briefing-form {
  margin-top: 38px;
  border: 1px solid var(--line);
  padding: clamp(22px, 3vw, 34px);
  background: rgba(0, 0, 0, 0.68);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px 18px;
}

.briefing-form label,
.briefing-form fieldset {
  display: grid;
  gap: 9px;
  min-width: 0;
}

.briefing-form label > span,
.briefing-form legend {
  color: var(--dim);
  font-size: 0.66rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.briefing-form input,
.briefing-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.42);
  color: var(--off-white);
  font: inherit;
  min-height: 52px;
  padding: 12px 14px;
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.briefing-form input:focus,
.briefing-form textarea:focus {
  border-color: rgba(144, 162, 185, 0.72);
  box-shadow: 0 0 0 1px rgba(144, 162, 185, 0.28) inset, 0 0 18px rgba(144, 162, 185, 0.14);
  background: rgba(0, 0, 0, 0.5);
}

.briefing-form textarea {
  min-height: 124px;
  resize: vertical;
}

.briefing-form fieldset {
  border: 0;
  margin: 22px 0;
  padding: 0;
}

.briefing-form fieldset {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.briefing-form legend {
  width: 100%;
  margin-bottom: 4px;
}

.briefing-form fieldset label {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  border: 1px solid var(--line);
  padding: 0 14px;
  color: var(--muted);
  cursor: pointer;
  background: rgba(0, 0, 0, 0.18);
  transition: border-color 180ms ease, color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.briefing-form fieldset input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.briefing-form fieldset label:has(input:checked) {
  border-color: rgba(144, 162, 185, 0.86);
  color: var(--off-white);
  background: rgba(144, 162, 185, 0.12);
  box-shadow: 0 0 0 1px rgba(144, 162, 185, 0.18) inset;
}

.briefing-form fieldset label:hover {
  border-color: rgba(144, 162, 185, 0.52);
  color: var(--off-white);
}

.briefing-form fieldset label:has(input:focus-visible),
.button:focus-visible,
.header-cta:focus-visible,
.nav-links a:focus-visible,
.brand:focus-visible,
.footer a:focus-visible {
  outline: 1px solid rgba(144, 162, 185, 0.82);
  outline-offset: 4px;
}

.form-area {
  margin-top: 14px;
}

.form-foot {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto;
  align-items: center;
  gap: 22px;
  margin-top: 28px;
  border-top: 1px solid var(--line);
  padding-top: 26px;
}

.form-foot p {
  margin: 0;
  max-width: 540px;
  color: var(--muted);
  font-size: 0.86rem;
}

.form-foot p > span {
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 10px;
  background: var(--signal-amber);
}

.form__sent {
  color: var(--off-white) !important;
}

.footer {
  width: min(calc(100% - var(--scrolly-frame-x) * 2), 1540px);
  margin: var(--frame-gap-y) auto 0;
  border: 1px solid rgba(144, 162, 185, 0.2);
  overflow: hidden;
  background: var(--black);
  color: var(--muted);
}

.footer__main,
.footer__bottom {
  width: 100%;
  margin: 0 auto;
  padding-inline: clamp(28px, 5vw, 72px);
}

.footer__main {
  display: grid;
  grid-template-columns: minmax(280px, 1.4fr) repeat(3, minmax(150px, 0.8fr));
  gap: clamp(28px, 5vw, 86px);
  padding-block: clamp(56px, 7vw, 86px);
  border-bottom: 1px solid var(--line);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 18px;
}

.footer__brand img {
  width: 58px;
  height: 58px;
  background: var(--black);
  object-fit: contain;
}

.footer__brand strong {
  display: block;
  color: var(--off-white);
  font-size: 1.1rem;
  font-weight: 650;
}

.footer p {
  margin: 0;
}

.footer__brand p {
  max-width: 300px;
  margin-top: 8px;
}

.footer__column {
  display: grid;
  align-content: start;
  gap: 14px;
}

.footer__column > span {
  color: var(--dim);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0;
}

.footer__column a,
.footer__column p {
  color: var(--muted);
  font-size: 0.96rem;
  font-weight: 400;
}

.footer__column a:hover {
  color: var(--neon-blue);
  text-shadow: 0 0 8px rgba(144, 162, 185, 0.26);
}

.footer__bottom {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-block: 24px;
  color: var(--dim);
  font-size: 0.78rem;
}

.footer__bottom span:nth-child(2) {
  justify-self: center;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.footer a {
  color: var(--active);
}

.footer__bottom span:last-child {
  justify-self: end;
}

@media (max-width: 980px) {
  .site-nav {
    grid-template-columns: 1fr auto;
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 96px;
  }

  .hero-panel {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    margin-top: 30px;
    grid-template-columns: 1fr;
    width: 100%;
    transform: none;
  }

  .hero__content {
    padding-bottom: 0;
    transform: none;
  }

  .hero-panel > div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .hero-panel > div:last-child {
    border-bottom: 0;
  }

  .brief-strip,
  .intro,
  .problem-proof,
  .loop-cards,
  .cost-note,
  .method,
  .faq,
  .engage {
    grid-template-columns: 1fr;
  }

  .faq__intro {
    position: relative;
    top: auto;
  }

  .problem-proof__row {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .hero__coords {
    top: 88px;
    font-size: 0.62rem;
  }

  .readouts,
  .proof-split,
  .form-grid,
  .form-foot {
    grid-template-columns: 1fr;
  }

  .cap-card,
  .cap-card--large {
    grid-column: span 6;
  }

  .footer__main,
  .footer__bottom {
    grid-template-columns: 1fr;
  }

  .footer__bottom span,
  .footer__bottom span:nth-child(2),
  .footer__bottom span:last-child {
    justify-self: start;
  }
}

@media (max-width: 640px) {
  :root {
    --site-header-h: 64px;
    --gutter: 20px;
    --page-frame-x: 14px;
  }

  .site-nav {
    height: 64px;
  }

  .brand__mark {
    width: 34px;
    height: 34px;
  }

  .brand__name {
    font-size: 0.84rem;
  }

  .brand__name span {
    display: none;
  }

  .header-cta {
    padding: 9px 10px;
    font-size: 0.72rem;
  }

  h1 {
    font-size: clamp(2.35rem, 13vw, 3.6rem);
    line-height: 1;
  }

  h2 {
    font-size: clamp(1.75rem, 9vw, 2.65rem);
  }

  .hero {
    padding: 110px var(--gutter) 48px;
  }

  .hero__coords {
    display: none;
  }

  .hero__actions {
    display: grid;
  }

  .brief-card {
    min-height: auto;
  }

  .scrolly {
    width: calc(100% - var(--page-frame-x) * 2);
    margin: var(--frame-gap-y) auto;
    min-height: auto;
    border: 1px solid rgba(144, 162, 185, 0.2);
    overflow: hidden;
    background: var(--black);
  }

  .scrolly__media {
    position: relative;
    top: auto;
    height: auto;
    aspect-ratio: 16 / 10;
    background:
      linear-gradient(180deg, rgba(0, 0, 0, 0.08), rgba(0, 0, 0, 0.46)),
      url("assets/media/scrolly-frames-v2/hero-problem/frame-0001.jpg") center / cover no-repeat;
  }

  .scrolly__media::before,
  .scrolly__media::after,
  .scrolly-canvas,
  .scrolly-progress {
    display: none;
  }

  .scrolly__steps,
  .story-step,
  .story-step--hero,
  .story-step--problem,
  .story-step[data-media="mesh"],
  .story-step[data-media="surface"],
  .story-step[data-media="certificate"],
  .story-step[data-media="range"],
  .story-step[data-media="field"],
  .story-step[data-media="convergence"] {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    inset: auto;
    width: auto;
    height: auto;
  }

  .scrolly__steps {
    display: grid;
    gap: 0;
    margin-top: 0;
    height: auto;
    padding: 0;
    pointer-events: auto;
  }

  .scrolly__spacer {
    display: none;
  }

  .story-step {
    display: block;
    min-height: 0;
    border-top: 1px solid rgba(144, 162, 185, 0.18);
    padding: 30px var(--gutter);
    opacity: 1;
    transform: none !important;
    text-shadow: none;
    pointer-events: auto;
    align-content: start;
  }

  .story-step--hero {
    padding-bottom: 34px;
  }

  .story-step::before {
    content: "";
    display: block;
    aspect-ratio: 16 / 9;
    margin: 0 0 22px;
    border: 1px solid rgba(144, 162, 185, 0.16);
    background: var(--mobile-frame, url("assets/media/scrolly-frames-v2/hero-problem/frame-0001.jpg")) center / cover no-repeat;
  }

  .story-step--hero::before {
    display: none;
  }

  .story-step--problem {
    --mobile-frame: url("assets/media/scrolly-frames-v2/hero-problem/frame-0145.jpg");
  }

  .story-step[data-media="mesh"] {
    --mobile-frame: url("assets/media/scrolly-frames-v2/problem-mesh/frame-0145.jpg");
  }

  .story-step[data-media="surface"] {
    --mobile-frame: url("assets/media/scrolly-frames-v2/mesh-surface/frame-0060.jpg");
  }

  .story-step[data-media="certificate"] {
    --mobile-frame: url("assets/media/scrolly-frames-v2/surface-certificate/frame-0060.jpg");
  }

  .story-step[data-media="range"] {
    --mobile-frame: url("assets/media/scrolly-frames-v2/certificate-range/frame-0040.jpg");
  }

  .story-step[data-media="convergence"] {
    --mobile-frame: url("assets/media/scrolly-frames-v2/range-convergence/frame-0060.jpg");
  }

  .story-step[data-media="field"] {
    --mobile-frame: url("assets/media/scrolly-frames-v2/convergence-field/frame-0100.jpg");
  }

  .story-step h2,
  .story-step p,
  .story-step--hero h1,
  .story-step--hero p:not(.eyebrow) {
    max-width: none;
  }

  .story-step h2 {
    font-size: clamp(1.55rem, 7.5vw, 2.1rem);
  }

  .story-step p {
    font-size: 0.95rem;
  }

  .compact-proof {
    margin-top: 18px;
  }

  .console {
    min-height: 500px;
  }
}

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