/* ============================================================
   Lumi · projectlumi.ai
   Graphite and one light. Real product, real numbers, no toys.
   ============================================================ */

:root {
  --bg: #050608;
  --surface: #0a0c10;
  --raised: #11141a;
  --line: #1a1e26;
  --line-2: #252a34;
  --ink: #f2f4f7;
  --ink-2: #9aa3b2;
  --ink-3: #5b6472;
  --light: #1ea7d6;
  --light-hi: #7fd3f5;
  --core: #eaf8ff;
  --light-text: linear-gradient(180deg, #ffffff, #cfefff 55%, #7fd3f5);

  --display: "Geist", "Inter", system-ui, sans-serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --serif: "Instrument Serif", Georgia, serif;

  --ease: cubic-bezier(0.2, 0.7, 0, 1);
  --gutter: 24px;
  --nav-h: 64px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 8px);
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  max-width: 100%;
}
a {
  color: inherit;
  text-decoration: none;
}
h1,
h2,
h3 {
  margin: 0;
  font-family: var(--display);
  font-weight: 600;
  text-wrap: balance;
}
p {
  margin: 0;
  text-wrap: pretty;
}
:focus-visible {
  outline: 2px solid var(--light-hi);
  outline-offset: 3px;
  border-radius: 6px;
}
.wrap {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* the one italic accent, rationed to three phrases */
.lightword {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
  background: var(--light-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-right: 0.06em;
}
.dim {
  color: var(--ink-3);
}

/* a single cold light from above */
.toplight {
  position: fixed;
  inset: 0 0 auto;
  height: 70vh;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(60% 60% at 50% 0%, rgba(30, 167, 214, 0.14), transparent 70%);
}

/* ─────────── nav ─────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 32px;
  padding-inline: max(var(--gutter), calc((100vw - 1200px) / 2 + var(--gutter)));
  background: rgba(5, 6, 8, 0.72);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.nav.scrolled {
  border-bottom-color: var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font: 600 20px/1 var(--display);
  letter-spacing: -0.02em;
}
.nav-links {
  display: flex;
  gap: 26px;
}
.nav-links a {
  font-size: 14px;
  color: var(--ink-2);
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--ink);
}
.nav-cta {
  margin-left: auto;
}
.nav-toggle {
  display: none;
  margin-left: auto;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: 10px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
}
.nav-toggle span {
  width: 16px;
  height: 1.5px;
  background: var(--ink);
}
.mobile-menu {
  display: none;
}

/* ─────────── buttons ─────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font: 500 15px/1 var(--body);
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.2s var(--ease);
  white-space: nowrap;
}
.btn:hover {
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--ink);
  color: var(--bg);
}
.btn-primary:hover {
  background: #ffffff;
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-2);
}
.btn-ghost:hover {
  border-color: #3a4150;
}
.nav .btn {
  padding: 10px 18px;
  font-size: 14px;
}

/* ─────────── shared type ─────────── */
.eyebrow,
.kicker,
.tag,
.num {
  font: 500 11.5px/1.2 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.kicker {
  color: var(--light-hi);
  margin-bottom: 20px;
}
.section {
  padding-block: 140px;
}
.head {
  max-width: 820px;
  margin-bottom: 64px;
}
.head.center {
  margin-inline: auto;
  text-align: center;
}
.head h2 {
  font-size: clamp(38px, 5vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.035em;
}
.head .lightword {
  font-size: 1.06em;
}
.sub {
  margin-top: 24px;
  font-size: 18px;
  color: var(--ink-2);
  max-width: 680px;
}
.head.center .sub {
  margin-inline: auto;
}

/* ─────────── hero ─────────── */
.hero {
  padding-top: 96px;
  overflow: hidden;
}
.hero-copy {
  text-align: center;
}
.hero h1 {
  margin: 22px 0 0;
  font-size: clamp(56px, 8vw, 112px);
  line-height: 0.95;
  letter-spacing: -0.045em;
}
.hero h1 .lightword {
  font-size: 1.04em;
  line-height: 1.05;
}
.hero-sub {
  margin: 30px auto 0;
  font: 500 clamp(20px, 2vw, 24px) / 1.35 var(--display);
  letter-spacing: -0.015em;
  color: var(--ink);
}
.hero-lede {
  margin: 16px auto 0;
  max-width: 640px;
  color: var(--ink-2);
}
.hero-actions {
  margin-top: 36px;
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.hero-proof {
  margin-top: 28px;
  font: 400 13px var(--mono);
  letter-spacing: 0.04em;
  color: var(--ink-3);
}
.hero-window-wrap {
  position: relative;
  max-width: 1240px;
  margin: 72px auto 0;
  padding-inline: var(--gutter);
  perspective: 2000px;
}
.horizon {
  position: absolute;
  inset: auto -20% -10% -20%;
  height: 70%;
  background: radial-gradient(50% 60% at 50% 100%, rgba(30, 167, 214, 0.22), transparent 70%);
  pointer-events: none;
}
.hero-window {
  transform-origin: 50% 0%;
  transform: rotateX(var(--tilt, 14deg));
  will-change: transform;
}

/* ─────────── frames for real product screens ─────────── */
.frame {
  position: relative;
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  background: #111214;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 50px 120px -30px rgba(0, 0, 0, 0.85);
}
.frame img {
  display: block;
  width: 100%;
  height: auto;
}

/* ─────────── agentic: layered screens that build as you scroll ─────────── */
.layers {
  position: relative;
  height: 400vh;
}
.layers-sticky {
  position: sticky;
  top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.layer {
  position: absolute;
  inset: 0 var(--gutter);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 18px;
  opacity: 0;
  transform: translate3d(0, 40px, 0);
  transition: opacity 0.7s var(--ease), transform 0.8s var(--ease), filter 0.7s var(--ease);
  pointer-events: none;
}
.layer.on,
.layer.past {
  opacity: 1;
  pointer-events: auto;
}
.layer.on {
  transform: translate3d(calc(var(--i) * 10px), calc(var(--i) * 10px), 0);
}
.layer.past {
  transform: translate3d(calc(var(--i) * 10px), calc(var(--i) * 10px - 24px), 0) scale(0.96);
  filter: brightness(0.55) blur(1px);
}
.layer .frame {
  max-height: 62vh;
  aspect-ratio: 2880 / 1720;
  width: auto;
  align-self: center;
}
.layer .frame img {
  height: 100%;
  object-fit: cover;
  object-position: top left;
}
.layer-head {
  display: grid;
  gap: 6px;
  justify-items: center;
  text-align: center;
}
.layer-ask {
  font: 500 clamp(18px, 1.8vw, 22px) / 1.35 var(--display);
  letter-spacing: -0.01em;
  color: var(--ink);
  max-width: 780px;
}
.layer-got {
  font-size: 15px;
  color: var(--ink-2);
}

/* ─────────── confidential ─────────── */
.trio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}
.trio div {
  display: grid;
  gap: 8px;
  padding: 28px 28px 0 0;
}
.trio b {
  font: 600 20px/1.2 var(--display);
  letter-spacing: -0.02em;
}
.trio span {
  color: var(--ink-2);
  font-size: 16px;
}
.fineprint {
  margin-top: 48px;
  max-width: 720px;
  font-size: 14px;
  color: var(--ink-3);
}

/* ─────────── cards ─────────── */
.grid6,
.grid3,
.grid2 {
  display: grid;
  gap: 16px;
}
.grid6 {
  grid-template-columns: repeat(3, 1fr);
}
.grid3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid2 {
  grid-template-columns: repeat(2, 1fr);
  max-width: 900px;
  margin-inline: auto;
}
.card {
  padding: 30px 28px 32px;
  border-radius: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  transition: border-color 0.3s;
}
.card:hover {
  border-color: var(--line-2);
}
.card .num {
  display: block;
  margin-bottom: 28px;
}
.card h3 {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.card p {
  color: var(--ink-2);
  font-size: 16px;
}

/* ─────────── meet lumi: wakes up as you scroll ─────────── */
.wake {
  position: relative;
  height: 260vh;
  background: #000;
}
.wake-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.wake-canvas,
.wake-still {
  grid-area: 1 / 1;
  width: min(1180px, 100%);
  height: auto;
  aspect-ratio: 1200 / 750;
}
.wake-canvas {
  display: none;
}
.wake.live .wake-canvas {
  display: block;
}
.wake.live .wake-still {
  display: none;
}
.wake-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 8vh;
  text-align: center;
  padding-inline: var(--gutter);
}
.wake-line {
  font: 600 clamp(36px, 5.4vw, 76px) / 1.04 var(--display);
  letter-spacing: -0.04em;
  color: var(--ink);
}
.wake-line .lightword {
  font-size: 1.08em;
}
.wake-sub {
  margin-top: 14px;
  color: var(--ink-2);
}
.wake.live .wake-caption {
  opacity: var(--cap, 0);
  transform: translateY(calc((1 - var(--cap, 0)) * 16px));
}

/* ─────────── engine ─────────── */
.flagship {
  display: flex;
  align-items: flex-end;
  gap: 28px;
  padding: 40px 0 44px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.flag-num {
  font: 600 clamp(96px, 14vw, 180px) / 0.85 var(--display);
  letter-spacing: -0.06em;
  background: var(--light-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.flag-unit {
  font: 500 24px/1.2 var(--display);
  letter-spacing: -0.02em;
}
.flag-rig {
  margin-top: 8px;
  font: 400 13px/1.5 var(--mono);
  color: var(--ink-3);
}
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.stat {
  padding: 36px 28px 36px 0;
  border-bottom: 1px solid var(--line);
}
.stat-num {
  font: 600 56px/1 var(--display);
  letter-spacing: -0.045em;
  color: var(--ink);
}
.stat-label {
  margin-top: 12px;
  font: 500 17px/1.35 var(--display);
}
.stat-rig {
  margin-top: 8px;
  font: 400 12.5px/1.5 var(--mono);
  color: var(--ink-3);
}

/* the Prism Calculus: a glass prism fanning into a hundred agents, revolving as you scroll */
.prism-block {
  margin-top: 120px;
  padding: 100px 0 40px;
  background: #000;
  border-block: 1px solid var(--line);
}
.prism-title {
  font-size: clamp(40px, 5vw, 64px);
  letter-spacing: -0.035em;
}
.pz {
  position: relative;
  height: 560px;
  perspective: 1400px;
  perspective-origin: 50% 40%;
  overflow: hidden;
}
.pz-scene {
  position: absolute;
  left: 50%;
  top: 46%;
  width: 0;
  height: 0;
  transform-style: preserve-3d;
  transform: scale(var(--s, 1)) rotateX(-12deg) rotateY(var(--rot, -24deg));
}
.pz-scene * {
  transform-style: preserve-3d;
}
.pz-prism {
  position: absolute;
}
.pz-face {
  position: absolute;
  width: 120px;
  height: 200px;
  left: -60px;
  top: -100px;
  transform: rotateY(calc(var(--k) * 120deg)) translateZ(34.64px);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(207, 239, 255, 0.4);
  backface-visibility: visible;
}
.pz-cap {
  position: absolute;
  width: 138.6px;
  height: 138.6px;
  left: -69.3px;
  top: -69.3px;
  clip-path: polygon(93.3% 75%, 50% 0%, 6.7% 75%);
  background: rgba(207, 239, 255, 0.07);
}
.pz-top {
  transform: translateY(-100px) rotateX(90deg);
}
.pz-bottom {
  transform: translateY(100px) rotateX(90deg);
}
.pz-core {
  position: absolute;
  width: 3px;
  height: 170px;
  left: -1.5px;
  top: -85px;
  background: linear-gradient(180deg, transparent, var(--core) 30%, var(--light-hi) 70%, transparent);
  box-shadow: 0 0 16px 4px rgba(127, 211, 245, 0.45);
}
.pz-core2 {
  transform: rotateY(90deg);
}
.pz-agent {
  position: absolute;
}
.pz-ray {
  position: absolute;
  left: 0;
  top: 0;
  height: 1px;
  transform-origin: 0 50%;
  transform: rotateY(calc(var(--a) - 90deg)) rotateZ(var(--tilt));
  background: linear-gradient(90deg, rgba(234, 248, 255, 0.55), rgba(127, 211, 245, 0.12));
}
.pz-dot {
  position: absolute;
  left: -2px;
  top: -2px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--core);
  box-shadow: 0 0 10px 2px rgba(127, 211, 245, 0.75);
  transform: rotateY(var(--a)) translateZ(var(--r)) translateY(var(--y)) rotateY(calc(-1 * (var(--a) + var(--rot, -24deg)))) rotateX(12deg);
}
.pz-agent {
  opacity: 0;
  transition: opacity 0.4s;
}
.pz-agent.lit {
  opacity: 1;
}
.pz-counter {
  position: absolute;
  left: max(var(--gutter), calc((100vw - 1200px) / 2 + var(--gutter)));
  top: 24px;
  font: 500 12px var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.pz-counter b {
  color: var(--ink);
  font-weight: 500;
}
.pz-label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 16px;
  text-align: center;
  font: 500 12px var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.builder {
  margin-top: 96px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.builder-line {
  font: 600 clamp(26px, 3vw, 36px) / 1.15 var(--display);
  letter-spacing: -0.03em;
}
.builder-sub {
  margin-top: 10px;
  font-size: 18px;
  color: var(--ink-2);
}
.compat {
  margin-top: 40px;
  font-size: 15px;
  color: var(--ink-2);
}
.compat b {
  color: var(--ink);
  font-weight: 500;
}
.footnote {
  margin-top: 20px;
  max-width: 900px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-3);
}

/* ─────────── beta & footer ─────────── */
.beta-actions {
  margin-top: 36px;
  display: flex;
  justify-content: center;
}
.share-note {
  margin-top: 16px;
  font-size: 14px;
  color: var(--ink-3);
}
.share-note.done {
  color: var(--light-hi);
}
.signoff {
  margin-top: 72px;
  font: 600 clamp(28px, 3vw, 40px) / 1.1 var(--display);
  letter-spacing: -0.035em;
  color: var(--ink-3);
}
.footer {
  border-top: 1px solid var(--line);
  padding-block: 32px;
}
.foot {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--ink-3);
}
.foot .brand {
  font-size: 17px;
  color: var(--ink);
}
.foot-line {
  margin-left: auto;
}

/* ─────────── reveal ─────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ─────────── responsive ─────────── */
@media (max-width: 1000px) {
  .nav-links,
  .nav-cta {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .mobile-menu {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    z-index: 49;
    display: grid;
    padding: 8px var(--gutter) 20px;
    background: rgba(5, 6, 8, 0.97);
    border-bottom: 1px solid var(--line);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 0.25s, transform 0.25s var(--ease);
  }
  .mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }
  .mobile-menu a {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    color: var(--ink-2);
  }
  .grid6,
  .grid3 {
    grid-template-columns: 1fr 1fr;
  }
  .stats {
    grid-template-columns: 1fr;
  }
}

/* phones: no sticky stages; the layers stack, full width */
@media (max-width: 700px) {
  :root {
    --gutter: 16px;
    --nav-h: 58px;
  }
  .section {
    padding-block: 96px;
  }
  .head {
    margin-bottom: 40px;
  }
  .sub {
    font-size: 16.5px;
  }
  .hero {
    padding-top: 56px;
  }
  .hero-actions .btn {
    flex: 1 1 100%;
  }
  .hero-window-wrap {
    margin-top: 48px;
  }
  .layers {
    height: auto;
  }
  .layers-sticky {
    position: static;
    height: auto;
    display: grid;
    gap: 64px;
  }
  .layer {
    position: static;
    opacity: 1;
    transform: none;
    filter: none;
    pointer-events: auto;
  }
  .layer.on,
  .layer.past {
    transform: none;
    filter: none;
  }
  .layer .frame {
    max-height: none;
    aspect-ratio: auto;
    width: 100%;
  }
  .layer .frame img {
    height: auto;
  }
  .layer-head {
    justify-items: start;
    text-align: left;
  }
  .trio,
  .grid6,
  .grid3,
  .grid2 {
    grid-template-columns: 1fr;
  }
  .trio div {
    padding: 22px 0 22px;
    border-bottom: 1px solid var(--line);
  }
  .flagship {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
  .wake {
    height: 220vh;
  }
  .wake-canvas,
  .wake-still {
    width: 170%;
    max-width: none;
  }
  .wake-caption {
    bottom: 12vh;
  }
  .pz {
    height: 380px;
  }
  .pz-scene {
    --s: 0.6;
  }
  .foot-line {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
  .hero-window {
    transform: none;
  }
  .layers {
    height: auto;
  }
  .layers-sticky {
    position: static;
    height: auto;
    display: grid;
    gap: 64px;
  }
  .layer {
    position: static;
    opacity: 1;
    transform: none;
    filter: none;
  }
  .layer .frame {
    max-height: none;
    width: 100%;
  }
  .wake {
    height: auto;
  }
  .wake-sticky {
    position: static;
    height: auto;
    padding-block: 40px 140px;
  }
}

/* earlier layers keep only their screen, stacked behind; their words step aside */
.layer .layer-head {
  transition: opacity 0.4s var(--ease);
}
.layer.past .layer-head {
  opacity: 0;
}
@media (max-width: 700px) {
  .layer.past .layer-head {
    opacity: 1;
  }
}

/* the deck: earlier screens sit directly behind the current one, each a step back; nothing reaches the words */
.layer {
  gap: 56px;
  transform-origin: 50% 0;
}
.layer.on {
  transform: none;
}
.layer.past {
  transform: translateY(calc(var(--d, 1) * -12px)) scale(calc(1 - var(--d, 1) * 0.035));
  filter: brightness(calc(0.5 - var(--d, 1) * 0.1));
}
@media (max-width: 700px) {
  .layer {
    gap: 18px;
  }
  .layer.past {
    transform: none;
    filter: none;
  }
}

/* ─────────── FAQ ─────────── */
.faq { max-width: 820px; border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { list-style: none; cursor: pointer; padding: 24px 40px 24px 0; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary h3 { font-size: 19px; font-weight: 500; line-height: 1.4; }
.faq-item summary::after { content: ""; position: absolute; right: 6px; top: 50%; width: 10px; height: 10px;
  border-right: 1.5px solid var(--ink-3); border-bottom: 1.5px solid var(--ink-3);
  transform: translateY(-70%) rotate(45deg); transition: transform .3s var(--ease); }
.faq-item[open] summary::after { transform: translateY(-30%) rotate(225deg); border-color: var(--light-hi); }
.faq-item summary:hover h3 { color: var(--light-hi); }
.faq-item p { margin: 0 0 28px; max-width: 720px; color: var(--ink-2); font-size: 16px; }
.foot-link { color: var(--ink-2); }
.foot-link:hover { color: var(--ink); }

/* ─────────── performance and access ─────────── */
.flag-num [data-count],
.stat-num [data-count] {
  display: inline-block;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.flag-num [data-count] { min-width: 3ch; }
#skills,
#setup,
#mission,
#faq {
  content-visibility: auto;
  contain-intrinsic-size: auto 900px;
}
.skip {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  font-size: 14px;
}
.skip:focus {
  top: 12px;
}

/* ─────────── inner pages ─────────── */
.page-hero {
  padding: 88px 0 48px;
}
.page-hero h1 {
  font-size: clamp(40px, 6vw, 80px);
  line-height: 1.02;
  letter-spacing: -0.04em;
  max-width: 1000px;
}
.page-hero .sub {
  max-width: 760px;
}
.crumbs {
  font: 400 13px var(--mono);
  color: var(--ink-3);
  margin-bottom: 28px;
}
.crumbs a:hover {
  color: var(--ink);
}
.page-figure {
  margin: 16px 0 0;
}
.figcap {
  margin-top: 14px;
  font-size: 14px;
  color: var(--ink-3);
}
.page-body {
  padding: 40px 0 40px;
}
.prose {
  max-width: 880px;
}
.prose h2 {
  margin: 80px 0 18px;
  font-size: clamp(28px, 3.2vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.prose > p,
.prose li {
  color: var(--ink-2);
}
.prose > p + p {
  margin-top: 14px;
}
.prose b {
  color: var(--ink);
  font-weight: 500;
}
.prose a {
  color: var(--light-hi);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(127, 211, 245, 0.4);
}
.prose ul {
  margin: 14px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
}
.prose code {
  font: 400 14px var(--mono);
  color: var(--ink);
}
.prose .page-figure {
  margin: 24px 0 18px;
}
.prose .faq {
  margin-top: 8px;
}
.note {
  margin-top: 12px;
  font-size: 13.5px;
  color: var(--ink-3);
}
.callout {
  margin-top: 64px;
  padding: 24px 26px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 2px solid var(--light);
  color: var(--ink-2);
}
.callout b {
  color: var(--ink);
  font-weight: 500;
}
.table-wrap {
  margin-top: 20px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
.data-table th,
.data-table td {
  padding: 13px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.data-table thead th {
  font: 500 11.5px var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  background: var(--surface);
  white-space: nowrap;
}
.data-table tbody tr:last-child td {
  border-bottom: 0;
}
.data-table td {
  color: var(--ink-2);
}
.data-table td:first-child {
  color: var(--ink);
}
.data-table .num {
  font: 400 14px var(--mono);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.data-table .num b {
  color: var(--ink);
  font-weight: 500;
}
.cta-band {
  border-top: 1px solid var(--line);
}
.cta-band .beta-actions {
  gap: 12px;
  flex-wrap: wrap;
}
.foot-pages {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  padding-bottom: 24px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.foot-pages a {
  color: var(--ink-2);
}
.foot-pages a:hover {
  color: var(--ink);
}
.footer > .wrap > .foot {
  padding: 0;
}
@media (max-width: 700px) {
  .page-hero {
    padding: 56px 0 32px;
  }
  .prose h2 {
    margin-top: 64px;
  }
  .data-table {
    font-size: 14px;
  }
  .data-table th,
  .data-table td {
    padding: 11px 12px;
  }
}