/* Self-hosted type (CSP allows self only). Clash Display carries headlines;
   Satoshi carries everything readable. Inter stays as the metric-close
   fallback while the woff2s load. */
@font-face { font-family: "Clash Display"; src: url("/assets/fonts/clash-display-500.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: "Clash Display"; src: url("/assets/fonts/clash-display-600.woff2") format("woff2"); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "Satoshi"; src: url("/assets/fonts/satoshi-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Satoshi"; src: url("/assets/fonts/satoshi-500.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: "Satoshi"; src: url("/assets/fonts/satoshi-700.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }

:root {
  color-scheme: dark;
  --font-display: "Clash Display", Inter, ui-sans-serif, system-ui, sans-serif;
  --font-body: "Satoshi", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --ink: #f2f5ef;
  --muted: #aab4ac;
  --muted-2: #97a199;
  /* Smallest labels sit on graphite, so they need their own floor to clear
     WCAG AA 4.5:1 at 10-12px. Anything below this reads as disabled. */
  --label: #949e96;
  --graphite-0: #090b0a;
  --graphite-1: #0d100f;
  --graphite-2: #121614;
  --graphite-3: #181d1a;
  --line: rgba(222, 235, 225, .13);
  --line-strong: rgba(222, 235, 225, .22);
  --signal: #a7ff58;
  --signal-soft: #c3ff8a;
  --warm: #e8ca8c;
  --radius: 18px;
  --shell: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 118px; }
body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(70rem 36rem at 86% -10%, rgba(167, 255, 88, .06), transparent 62%),
    var(--graphite-0);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.shell { width: min(100% - 32px, var(--shell)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 100; left: 16px; top: 12px; transform: translateY(-160%); background: var(--signal); color: #0a0d0b; padding: 10px 14px; border-radius: 8px; font-weight: 800; }
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid rgba(222, 235, 225, .08);
  background: rgba(9, 11, 10, .84);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}
/* Mobile header is two rows: wordmark + CTA, then the nav links. Hiding the
   nav below 700px left phones with no way to reach the section links. */
.nav-shell { min-height: 68px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0 18px; padding-bottom: 2px; }
.wordmark { display: inline-flex; align-items: center; min-height: 44px; font-family: var(--font-display); font-size: 28px; line-height: 1; font-weight: 600; letter-spacing: -.045em; }
.wordmark span { color: var(--signal); }
.site-nav { display: flex; order: 3; width: 100%; align-items: center; gap: 26px; margin-top: -6px; color: #a2aca4; font-size: 13px; }
.site-nav a { display: inline-flex; align-items: center; min-height: 44px; }
.nav-cta { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 8px 0; color: #dbe1dc; font-size: 13px; font-weight: 700; }
.nav-cta span { color: var(--signal); }

.hero { padding: 42px 0 48px; }
.hero-grid { display: grid; gap: 36px; }
.eyebrow, .kicker, .panel-label, .device-type, .flow-label { margin: 0; text-transform: uppercase; letter-spacing: .16em; font-size: 11px; font-weight: 800; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; color: #cbd2cd; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 14px rgba(167, 255, 88, .65); }
h1, h2, h3, p { text-wrap: pretty; }
/* Clash Display is narrow by design; the heavy negative tracking Inter needed
   would crush it. Headlines run tighter leading but near-neutral tracking.
   Its space glyph is also very narrow, so all display type gets word-spacing
   back or headlines read as one run-together word. */
h1, .section-heading h2, .history-copy h2, .early-panel h2, .flow-title, .principle-card h3, .recommendation h3, .device-copy h3, .family-line { word-spacing: .12em; }
h1 { margin: 19px 0 20px; font-family: var(--font-display); font-size: clamp(48px, 15vw, 74px); line-height: .95; letter-spacing: -.025em; font-weight: 600; }
/* The payoff line carries the only large use of the accent on the page. Grey
   here made the product proposition read as disabled text. */
h1 span { color: var(--signal); }
.hero-lede { max-width: 610px; margin: 0; color: #b6bfb8; font-size: clamp(17px, 4.7vw, 20px); line-height: 1.55; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 19px; margin-top: 27px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 14px; min-height: 50px; padding: 0 18px; border-radius: 8px; font-size: 14px; font-weight: 800; }
.button-primary { background: var(--ink); color: #0b0e0c; }
.button-primary span { color: #3c473f; }
.text-link { display: inline-flex; align-items: center; min-height: 44px; padding: 10px 0; border-bottom: 1px solid var(--line-strong); color: #c1c9c3; font-size: 13px; font-weight: 700; }
.text-link span { margin-left: 7px; color: var(--signal); }
.stage-note { margin: 20px 0 0; color: var(--label); font-size: 12px; }
.stage-note span { margin-inline: 6px; color: #7b857d; }
.image-frame { position: relative; overflow: hidden; border: 1px solid var(--line); background: var(--graphite-1); }
.hero-image-frame { border-radius: 16px; box-shadow: 0 32px 90px rgba(0, 0, 0, .35); }
.hero-image-frame img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: contain; }
.image-caption { position: absolute; inset: auto 0 0; display: flex; justify-content: space-between; gap: 20px; padding: 10px 12px; background: linear-gradient(transparent, rgba(5, 7, 6, .82)); color: rgba(244, 247, 243, .78); font-size: 10px; letter-spacing: .12em; }

.source-strip { border-block: 1px solid var(--line); padding: 19px 0; }
/* The strip scrolls on narrow screens. Fading the trailing edge shows there is
   more to reach; a hard clip just looked like a broken layout. */
.source-list {
  display: flex; gap: 10px 22px; overflow-x: auto; scrollbar-width: none;
  color: var(--label); font-size: 12px; font-weight: 700; white-space: nowrap;
  -webkit-mask-image: linear-gradient(90deg, #000 0, #000 86%, transparent 100%);
  mask-image: linear-gradient(90deg, #000 0, #000 86%, transparent 100%);
}
.source-list::-webkit-scrollbar { display: none; }
.source-list span::before { content: ""; display: inline-block; width: 3px; height: 3px; margin: 0 9px 2px 0; border-radius: 50%; background: #59635b; }
.source-list .more { color: #c3cbc5; }
/* The strip needs to say what it is: without this label it read as a random
   row of rival brands directly under the hero. */
.source-label { flex-shrink: 0; color: var(--signal-soft); text-transform: uppercase; letter-spacing: .14em; font-size: 10.5px; }
.source-list .source-label::before { display: none; }

.section { padding: 76px 0; }
.section-heading { margin-bottom: 32px; }
.kicker { color: var(--signal-soft); }
.section-heading h2, .history-copy h2, .early-panel h2 { margin: 12px 0 15px; font-family: var(--font-display); font-size: clamp(36px, 10.5vw, 60px); line-height: 1.02; letter-spacing: -.02em; font-weight: 600; }
.section-heading > div > p { max-width: 680px; margin: 0; color: var(--muted); font-size: 16px; }

/* ---- Platform flow ------------------------------------------------------ */
/* One idea per node, one rail for the whole proposition. Sentence-level copy
   stays out; the section heading carries the argument, the rail shows it. */
.flow-section { padding-top: 68px; }
.flow-rail { display: grid; gap: 6px; }
.flow-node { display: flex; flex-direction: column; padding: 22px 20px 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--graphite-1); }
.flow-label { color: var(--label); }
.flow-title { margin: 14px 0 0; font-family: var(--font-display); font-size: 20px; font-weight: 600; letter-spacing: -.01em; line-height: 1.15; }
.flow-sub { margin: 8px 0 0; color: var(--muted-2); font-size: 13.5px; line-height: 1.5; }
/* The N1 node is the one place the rail is allowed to glow. */
.flow-node-core { border-color: rgba(167, 255, 88, .32); background: linear-gradient(180deg, rgba(167, 255, 88, .05), transparent 72%), var(--graphite-1); box-shadow: 0 0 44px rgba(167, 255, 88, .05); }
.flow-node-core .flow-title { font-size: 25px; font-weight: 600; letter-spacing: -.045em; }
.flow-node-core .flow-title em { font-style: normal; color: var(--signal); }
.flow-arrow { display: grid; place-items: center; min-height: 26px; color: var(--label); font-size: 15px; transform: rotate(90deg); }

.principle-grid { display: grid; border-top: 1px solid var(--line); }
/* Flex column with the text block pushed down means the empty space lands in
   one place and every card's heading sits on the same line. Previously a fixed
   80px icon margin plus a tall min-height left a random hole in each card. */
.principle-card { display: flex; flex-direction: column; padding: 22px 4px 28px; border-bottom: 1px solid var(--line); }
.card-index { margin: 0; color: var(--label); font: 11px/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.line-icon { display: grid; place-items: center; width: 36px; height: 36px; margin: 18px 0 0; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--signal-soft); font-size: 11px; }
.principle-card h3 { margin: 24px 0 9px; font-family: var(--font-display); font-size: 21px; font-weight: 600; letter-spacing: -.01em; }
.principle-card > p:last-child { max-width: 390px; margin: 0; color: var(--muted-2); font-size: 14.5px; line-height: 1.5; }

.insight-panel { margin-top: 48px; padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, #151a17, #0e1110 70%); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .025); }
.insight-topline { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding-bottom: 18px; border-bottom: 1px solid var(--line); color: var(--label); font: 11px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .08em; }
.confidence { display: inline-flex; align-items: center; gap: 7px; }
.confidence i { width: 5px; height: 5px; border-radius: 50%; background: var(--signal); }
.insight-layout { display: grid; gap: 34px; padding-top: 31px; }
.panel-label { color: var(--label); }
.recommendation h3 { margin: 12px 0 7px; font-family: var(--font-display); font-size: clamp(31px, 9vw, 50px); line-height: 1.02; letter-spacing: -.02em; font-weight: 600; }
.recommendation > p:not(.panel-label) { max-width: 540px; margin: 0; color: var(--muted); font-size: 15px; }
.evidence-pill { display: inline-block; margin-top: 24px; padding: 9px 13px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted-2); font-size: 12px; line-height: 1.45; }
/* The card's proof: count, effect, confidence, confounders. The figure gets
   the weight; the label stays a quiet mono caption. */
.evidence-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 8px; margin: 0; padding: 0; list-style: none; }
.evidence-grid li { padding: 14px 14px 15px; border: 1px solid rgba(222, 235, 225, .09); border-radius: 10px; background: rgba(255, 255, 255, .018); }
.evidence-grid small { display: block; color: var(--label); font: 10px/1.35 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .08em; text-transform: uppercase; }
.evidence-grid strong { display: block; margin-top: 8px; font-size: 14.5px; font-weight: 650; letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
.evidence-grid .effect { color: var(--warm); }
.evidence-grid .high { color: var(--signal-soft); }

/* ---- The difference ----------------------------------------------------- */
.centered-heading { text-align: center; margin-bottom: 38px; }
.centered-heading h2 { margin-inline: auto; max-width: 900px; font-size: clamp(30px, 8vw, 54px); }
.centered-heading .dim, .family-line .dim { color: var(--muted-2); }
/* Homepage bridge: the difference stated once, details behind the link. */
.bridge-section { padding-top: 0; }
.bridge-section .section-heading { margin-bottom: 0; }
.bridge-copy { max-width: 560px; margin: 18px auto 0; color: var(--muted); font-size: 16px; }
.bridge-link { margin-top: 24px; }
.contrast-grid { display: grid; gap: 14px; max-width: 1020px; margin-inline: auto; }
.contrast-panel { display: flex; flex-direction: column; padding: 21px 20px 19px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--graphite-1); }
.contrast-tag { margin: 0 0 6px; color: var(--label); font: 11px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .08em; text-transform: uppercase; }
.contrast-panel ul { flex: 1; margin: 0; padding: 0; list-style: none; }
/* The ordinary dashboard is deliberately flat and grey: correct, tidy, mute. */
.metric-list li { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 13px 2px; border-bottom: 1px solid var(--line); color: var(--muted-2); font-size: 14px; }
.metric-list b { color: #c2c9c4; font-weight: 650; font-variant-numeric: tabular-nums; }
.contrast-after { border-color: rgba(167, 255, 88, .26); background: linear-gradient(165deg, rgba(167, 255, 88, .045), transparent 62%), var(--graphite-1); }
.finding-list li { position: relative; padding: 13px 2px 13px 19px; border-bottom: 1px solid var(--line); font-size: 14.5px; line-height: 1.45; color: #e3e8e2; }
.finding-list li::before { content: ""; position: absolute; left: 0; top: 20px; width: 6px; height: 6px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 10px rgba(167, 255, 88, .5); }
.contrast-caption { margin: 15px 0 0; color: var(--label); font-size: 12px; }
.contrast-after .contrast-caption { color: var(--signal-soft); }

.history-section { background: #0b0e0c; border-block: 1px solid rgba(222, 235, 225, .06); }
.history-grid { display: grid; gap: 42px; }
.history-copy h2 { max-width: 760px; }
.history-copy > p:not(.kicker) { max-width: 680px; margin: 0; color: var(--muted); font-size: 16px; }
/* The differentiation line gets its own edge so it reads as a belief, not a
   footnote. */
.history-belief { margin-top: 24px; padding: 4px 0 4px 18px; border-left: 2px solid rgba(167, 255, 88, .55); color: #dbe1db; font-size: clamp(17px, 4.6vw, 20px); line-height: 1.5; letter-spacing: -.012em; max-width: 560px; }
.source-panel { padding: 17px; border: 1px solid var(--line); border-radius: var(--radius); background: #111512; }
.source-panel-head { display: flex; justify-content: space-between; gap: 12px; padding: 4px 3px 17px; color: var(--label); font: 11px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .08em; text-transform: uppercase; }
.source-panel-head span:last-child { color: var(--signal-soft); }
.connection-list { display: grid; gap: 7px; margin: 0; padding: 0; list-style: none; }
.connection-list li { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 62px; padding: 11px 13px; border: 1px solid rgba(222, 235, 225, .09); border-radius: 9px; background: #0e120f; }
.connection-list b, .connection-list small { display: block; }
.connection-list b { font-size: 14px; }
.connection-list small { margin-top: 2px; color: var(--label); font-size: 12px; }
.connection-list em { color: var(--signal-soft); font: normal 10px/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .08em; text-transform: uppercase; }

.compact-heading { margin-bottom: 30px; }

.hardware-section { padding-bottom: 92px; }
.device-grid { display: grid; gap: 30px; }
.device-card { min-width: 0; }
.device-visual { position: relative; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #0d100f; }
.device-visual img { width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; transition: transform .7s cubic-bezier(.2,.8,.2,1); }
.device-visual > span { position: absolute; right: 13px; top: 13px; display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid rgba(255,255,255,.15); border-radius: 50%; background: rgba(9, 11, 10, .55); color: #c6cdc8; font: 11px/1 ui-monospace, SFMono-Regular, Menlo, monospace; backdrop-filter: blur(8px); }
/* A rule the full width of the card ties the caption to the image above it.
   Without it the three cards' captions read as one loose row of fragments. */
.device-copy { display: grid; gap: 7px; margin-top: 15px; padding-top: 16px; border-top: 1px solid var(--line); }
.device-type { color: var(--label); }
.device-copy h3 { margin: 4px 0 0; font-family: var(--font-display); font-size: 26px; font-weight: 600; letter-spacing: -.015em; }
.device-copy > p { max-width: 330px; margin: 0; color: var(--muted-2); font-size: 14px; line-height: 1.5; }
/* Closes the hardware argument in the family's own words. */
.family-line { margin: 52px 0 0; text-align: center; font-family: var(--font-display); font-size: clamp(22px, 6vw, 34px); line-height: 1.2; letter-spacing: -.015em; font-weight: 600; }

.early-section { padding: 0 0 80px; }
.early-panel { padding: 31px 20px; border: 1px solid var(--line-strong); border-radius: 22px; background: linear-gradient(125deg, #151a17, #0c100e 78%); }
.early-panel h2 { max-width: 670px; }
.early-panel > div:first-child > p:last-child { margin: 0; color: var(--muted); }
.signup-wrap { margin-top: 30px; }
.signup-form label { display: block; margin-bottom: 8px; color: var(--muted-2); font-size: 12px; font-weight: 700; }
.input-row { display: grid; gap: 8px; }
.input-row input { width: 100%; min-width: 0; min-height: 52px; padding: 0 14px; border: 1px solid var(--line-strong); border-radius: 8px; outline: 0; background: #090c0a; color: var(--ink); }
.input-row input::placeholder { color: #7c867e; }
.input-row input:focus { border-color: rgba(167, 255, 88, .68); box-shadow: 0 0 0 3px rgba(167, 255, 88, .08); }
.input-row input[aria-invalid="true"] { border-color: #d89a82; }
.input-row button { min-height: 52px; padding: 0 17px; border: 0; border-radius: 8px; background: var(--signal); color: #10140f; font-size: 13px; font-weight: 850; cursor: pointer; }
.input-row button span { margin-left: 7px; }
.form-status { min-height: 18px; margin: 10px 0 0; color: var(--label); font-size: 12px; }
.form-status.success { color: var(--signal-soft); }
.form-status.error { color: #e7ac95; }

.site-footer { padding: 40px 0 48px; border-top: 1px solid var(--line); }
.footer-grid { display: grid; gap: 22px; }
.footer-mark { width: fit-content; }
.footer-grid p { margin: 0; color: var(--label); font-size: 12.5px; }

/* ---- Scroll reveal ------------------------------------------------------ */
/* app.js adds .reveal-ready to <html> before first paint (deferred script),
   so with JS disabled nothing is ever hidden. Reduced motion skips the class
   entirely in JS; the media block below is a second line of defence. */
/* Transition lives on .is-in only: entering the hidden state must be instant,
   or content visibly fades out for a moment on first load. */
html.reveal-ready [data-reveal] { opacity: 0; transform: translateY(16px); }
html.reveal-ready [data-reveal].is-in { opacity: 1; transform: none; transition: opacity .65s ease, transform .65s cubic-bezier(.2, .7, .2, 1); }
html.reveal-ready .device-grid .device-card:nth-child(2) { transition-delay: .09s; }
html.reveal-ready .device-grid .device-card:nth-child(3) { transition-delay: .18s; }

@media (hover: hover) {
  .site-nav a:hover, .nav-cta:hover, .text-link:hover { color: var(--ink); }
  .button-primary:hover { background: var(--signal); }
  .device-card:hover .device-visual img { transform: scale(1.018); }
}

@media (min-width: 700px) {
  .shell { width: min(100% - 64px, var(--shell)); }
  .site-header { background: rgba(9, 11, 10, .76); }
  .nav-shell { min-height: 74px; }
  html { scroll-padding-top: 82px; }
  .nav-shell { flex-wrap: nowrap; padding-bottom: 0; }
  .site-nav { order: 0; width: auto; gap: 28px; margin: 0 0 0 auto; }
  .nav-cta { margin-left: 16px; padding: 9px 14px; border: 1px solid var(--line); border-radius: 999px; }
  .hero { padding: 72px 0 68px; }
  .hero-grid { gap: 54px; }
  h1 { font-size: clamp(70px, 11vw, 100px); }
  .section { padding: 104px 0; }
  .flow-section { padding-top: 88px; }
  .flow-rail { grid-template-columns: 1fr 1fr; gap: 12px; }
  /* Two-up on tablet: arrows between columns would lie about the flow, so the
     rail drops them and lets order carry it until the full rail fits. */
  .flow-arrow { display: none; }
  .principle-grid { grid-template-columns: 1fr 1fr; border-left: 1px solid var(--line); }
  .principle-card { min-height: 268px; padding: 22px; border-right: 1px solid var(--line); }
  .principle-card h3 { margin-top: auto; }
  .insight-panel { padding: 25px; }
  .insight-layout { grid-template-columns: 1.05fr .95fr; align-items: end; padding: 42px 6px 6px; }
  .contrast-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .history-grid { gap: 58px; }
  .connection-list { grid-template-columns: 1fr 1fr; }
  .device-grid { grid-template-columns: 1fr 1fr; gap: 42px 16px; }
  .early-panel { padding: 48px; }
  .input-row { grid-template-columns: minmax(0, 1fr) auto; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; align-items: start; }
  .footer-grid p:last-child { text-align: right; }
}

@media (min-width: 1000px) {
  .hero { min-height: min(780px, calc(100vh - 74px)); display: grid; align-items: center; padding: 68px 0 76px; }
  .hero-grid { grid-template-columns: .83fr 1.17fr; align-items: center; gap: 54px; }
  h1 { font-size: clamp(72px, 7vw, 106px); }
  .hero-image-frame { margin-right: calc((100vw - min(100vw - 64px, var(--shell))) / -2); border-radius: 18px 0 0 18px; border-right: 0; }
  .section-heading.split-heading { display: grid; grid-template-columns: .78fr 3.22fr; gap: 28px; align-items: start; }
  /* Sit the kicker on the heading's cap line rather than floating above it. */
  .section-heading.split-heading .kicker { padding-top: 15px; }
  .section-heading.split-heading h2 { margin-top: 0; }
  .flow-rail { grid-template-columns: 1fr auto 1.06fr auto 1fr auto 1fr; gap: 10px; align-items: stretch; }
  .flow-arrow { display: grid; transform: none; min-height: 0; padding-inline: 2px; }
  .flow-node { padding: 24px 22px 26px; }
  .principle-grid { grid-template-columns: repeat(4, 1fr); }
  .principle-card { min-height: 318px; padding: 23px 20px 28px; }
  .featured-card { background: linear-gradient(180deg, rgba(167, 255, 88, .045), transparent 74%); }
  .insight-panel { margin-top: 70px; padding: 29px; }
  .evidence-grid { grid-template-columns: 1fr 1fr; }
  .contrast-panel { padding: 26px 26px 23px; }
  /* At .9fr the copy column was ~490px, so a 60px heading broke into five short
     ragged lines. Even columns plus a heading size tuned to the column fix it. */
  .history-grid { grid-template-columns: 1fr 1.06fr; gap: 64px; align-items: center; }
  .history-copy h2 { max-width: none; font-size: clamp(34px, 3.6vw, 49px); }
  .history-copy { padding: 0 1.5vw 0 0; }
  .source-panel { padding: 20px; }
  .device-grid { grid-template-columns: repeat(3, 1fr); gap: 26px; }
  /* Was a two-column split, which put each device's description closer to the
     next card than to its own name. Stacked, each card reads as one unit. */
  .device-copy { grid-template-columns: 1fr; gap: 8px; }
  .hardware-section { padding-bottom: 128px; }
  .family-line { margin-top: 68px; }
  .early-section { padding-bottom: 104px; }
  .early-panel { display: grid; grid-template-columns: 1.05fr .95fr; align-items: end; gap: 72px; padding: 58px; }
  .early-panel h2 { margin-bottom: 13px; }
  .signup-wrap { margin-top: 0; }
}

@media (min-width: 1220px) {
  /* Only centre the source list once the label plus all eight names fit on
     one line. Below this they scroll with the trailing fade. */
  .source-list { justify-content: center; gap: 12px 34px; -webkit-mask-image: none; mask-image: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  html.reveal-ready [data-reveal] { opacity: 1; transform: none; }
}