/* ============================================================
   COGNITION — design system
   White-mode · matte-black product · calm indigo "halo" accent
   (Base primitives + CSS variables are shared with /audio.)
   ============================================================ */

:root {
  /* --- surfaces (white mode) --- */
  --paper:    #ffffff;
  --paper-2:  #f5f6fb;
  --paper-3:  #eceef6;
  --ink:      #0c0d12;   /* near-black — also the product colour */
  --ink-2:    #14151c;
  --ink-3:    #1c1e27;

  /* --- text --- */
  --text:       #14151b;
  --text-dim:   #565a6b;
  --text-faint: #8b8f9f;

  /* --- lines --- */
  --line:        rgba(12, 13, 18, 0.09);
  --line-strong: rgba(12, 13, 18, 0.16);

  /* --- accent (the "halo") --- */
  --violet:      #5b63f5;   /* names kept for /audio compatibility */
  --violet-soft: #8b93ff;
  --amber:       #f0a884;   /* warm secondary, used sparingly */
  --halo-1: #5b63f5;
  --halo-2: #7b6cf6;
  --halo-3: #56c6e6;
  --grad-accent: linear-gradient(118deg, #5b63f5 0%, #7b6cf6 48%, #56c6e6 100%);
  --grad-soft:   linear-gradient(118deg, #eef0ff 0%, #f3eeff 50%, #eafaff 100%);

  /* --- type --- */
  --font-sans:    "Hanken Grotesk", -apple-system, "Segoe UI", sans-serif;
  --font-display: "Space Grotesk", "Hanken Grotesk", sans-serif;
  --font-mono:    "Space Mono", ui-monospace, "SF Mono", monospace;

  /* --- rhythm --- */
  --space-section: clamp(88px, 12vw, 168px);
  --radius:    22px;
  --radius-sm: 13px;
  --radius-lg: 30px;
  --container: 1200px;
  --ease: cubic-bezier(0.22, 0.8, 0.3, 1);

  --shadow-sm: 0 1px 2px rgba(12,13,18,.04), 0 6px 18px rgba(12,13,18,.05);
  --shadow:    0 2px 6px rgba(12,13,18,.05), 0 24px 60px rgba(40,44,90,.10);
  --shadow-lg: 0 40px 120px rgba(40,44,90,.16);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-weight: 400;
  background: var(--paper);
  color: var(--text);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; color: inherit; cursor: pointer; }
::selection { background: rgba(91,99,245,.18); }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}

/* ---------- layout ---------- */
.container {
  width: min(var(--container), 100% - 48px);
  margin-inline: auto;
}
.container--narrow { width: min(900px, 100% - 48px); }

.section { padding-block: var(--space-section); position: relative; }
.section--tint { background: var(--paper-2); }
.section--ink {
  background: var(--ink);
  color: #eceeffa8;
}
.section--ink .section__title,
.section--ink .display { color: #fff; }

/* keep old /audio aliases working */
.section--dark { background: var(--paper); }
.section--light { background: var(--paper-2); }

/* ---------- typography ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--violet);
  font-weight: 400;
  margin-bottom: 20px;
}
.section--ink .eyebrow { color: var(--violet-soft); }

.display {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.04;
  color: var(--text);
}
.section__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 4.6vw, 3.3rem);
  letter-spacing: -0.025em;
  line-height: 1.06;
  max-width: 18ch;
}
.section__title em { font-style: normal; color: var(--violet); }

.section__lede {
  font-size: clamp(1.06rem, 1.7vw, 1.32rem);
  color: var(--text-dim);
  max-width: 56ch;
  margin-top: 22px;
  line-height: 1.58;
}
.section__turn {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.7rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-top: 48px;
  max-width: 30ch;
}
.accent-text { color: var(--violet); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 14px 26px;
  border-radius: 100px;
  font-weight: 500;
  font-size: 0.96rem;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  transition: transform .25s var(--ease), background .25s var(--ease),
              border-color .25s var(--ease), box-shadow .25s var(--ease), color .25s var(--ease);
  white-space: nowrap;
}
.btn--sm { padding: 10px 18px; font-size: 0.9rem; }
.btn--primary {
  background: var(--ink); color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn--ghost {
  background: transparent; color: var(--text);
  border-color: var(--line-strong);
}
.btn--ghost:hover { border-color: var(--ink); transform: translateY(-2px); }
.section--ink .btn--primary { background: #fff; color: var(--ink); }
.section--ink .btn--ghost { color: #fff; border-color: rgba(255,255,255,.28); }
.section--ink .btn--ghost:hover { border-color: #fff; }
.btn__arrow { transition: transform .25s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(3px); }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background .3s var(--ease), border-color .3s var(--ease), backdrop-filter .3s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(255,255,255,.72);
  backdrop-filter: saturate(1.6) blur(16px);
  -webkit-backdrop-filter: saturate(1.6) blur(16px);
  border-bottom-color: var(--line);
}
.nav__inner {
  width: min(var(--container), 100% - 48px);
  margin-inline: auto;
  height: 72px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav__logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.22rem;
  letter-spacing: -0.02em;
}
.nav__ring { width: 24px; height: 24px; flex: none; }
.nav__links { display: flex; gap: 34px; align-items: center; }
.nav__links a {
  font-size: 0.95rem; color: var(--text-dim);
  transition: color .2s var(--ease);
  position: relative;
}
.nav__links a:hover { color: var(--text); }
.nav__cta { display: inline-flex; }

.nav__burger { display: none; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: min(94vh, 900px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: 132px;
  padding-bottom: clamp(72px, 10vw, 128px);
  text-align: center;
  overflow: hidden;
}

/* --- background layer (video + placeholder halo + white veil) --- */
.hero__bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.hero__halo {
  position: absolute; left: 50%; top: 50%;
  width: min(1100px, 130vw); aspect-ratio: 1;
  translate: -50% -50%;
  background:
    radial-gradient(closest-side, rgba(91,99,245,.18), rgba(123,108,246,.11) 45%, rgba(86,198,230,.07) 66%, transparent 72%);
  filter: blur(6px);
  z-index: 0;
  pointer-events: none;
}
.hero__rings {
  position: absolute; left: 50%; top: 50%;
  translate: -50% -50%; z-index: 0; pointer-events: none;
  width: min(900px, 110vw); aspect-ratio: 1;
  opacity: .5;
}
.hero__video {
  position: absolute; inset: 0; z-index: 1;
  width: 100%; height: 100%; object-fit: cover;
  background: transparent;
}
.hero__scrim {
  position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background:
    radial-gradient(80% 66% at 50% 46%, rgba(6,7,12,.58), transparent 80%),
    linear-gradient(180deg, rgba(6,7,12,.54) 0%, rgba(6,7,12,.16) 26%, rgba(6,7,12,.26) 62%, rgba(6,7,12,.66) 100%);
}
.hero__vidcap {
  position: absolute; left: 16px; bottom: 16px; z-index: 3;
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: .62rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--text-faint);
  background: rgba(255,255,255,.62); border: 1px solid var(--line);
  padding: 6px 13px; border-radius: 100px;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  max-width: calc(100% - 32px);
}
.hero__vidcap b { color: var(--violet); letter-spacing: .12em; }
.hero.has-video .hero__vidcap { display: none; }

.hero__content { position: relative; z-index: 5; color: #fff; }
.hero .eyebrow { color: var(--violet-soft); text-shadow: 0 1px 14px rgba(0,0,0,.5); }
.hero__title { color: #fff; text-shadow: 0 2px 44px rgba(0,0,0,.4); }
.hero__sub { color: rgba(255,255,255,.9); text-shadow: 0 1px 20px rgba(0,0,0,.6); }
.hero__trust { color: rgba(255,255,255,.66); text-shadow: 0 1px 12px rgba(0,0,0,.5); }

/* cinematic hero buttons (light on dark video) */
.hero .btn--primary { background: #fff; color: var(--ink); }
.hero .btn--primary:hover { box-shadow: 0 12px 34px rgba(0,0,0,.32); }
.hero .btn--ghost { color: #fff; border-color: rgba(255,255,255,.36); }
.hero .btn--ghost:hover { border-color: #fff; background: rgba(255,255,255,.06); }
.play-dot { font-size: .68rem; transform: translateY(-1px); }

/* nav stays light while floating over the dark hero (home only) */
.home .nav:not(.is-scrolled) .nav__logo { color: #fff; }
.home .nav:not(.is-scrolled) .nav__links a { color: rgba(255,255,255,.8); }
.home .nav:not(.is-scrolled) .nav__links a:hover { color: #fff; }
.home .nav:not(.is-scrolled) .nav__cta { background: #fff; color: var(--ink); box-shadow: none; }
.home .nav:not(.is-scrolled) .nav__burger { color: #fff; border-color: rgba(255,255,255,.36); background: transparent; }
.home .nav.is-open .nav__links a { color: var(--text); }

/* scroll cue */
.hero__scroll {
  position: absolute; left: 50%; bottom: 26px; translate: -50% 0; z-index: 5;
  width: 26px; height: 42px; border: 1.5px solid rgba(255,255,255,.42);
  border-radius: 100px; display: grid; place-items: start center; padding-top: 8px;
  opacity: .8; transition: opacity .2s var(--ease);
}
.hero__scroll:hover { opacity: 1; }
.hero__scroll span { width: 3px; height: 8px; border-radius: 3px; background: var(--violet-soft); animation: scrolldot 1.6s var(--ease) infinite; }
@keyframes scrolldot { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(12px); opacity: 0; } 100% { transform: translateY(0); opacity: 0; } }
@media (max-width: 720px) { .hero__scroll, .hero__vidcap { bottom: 14px; } }
.hero__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.7rem, 7vw, 5.4rem);
  line-height: 1.0;
  letter-spacing: -0.035em;
  margin: 0 auto;
  max-width: 16ch;
}
.hero__sub {
  font-size: clamp(1.08rem, 1.9vw, 1.32rem);
  color: var(--text-dim);
  max-width: 60ch;
  margin: 26px auto 0;
  line-height: 1.6;
}
.hero__ctas {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
  margin-top: 38px;
}
.hero__trust {
  margin-top: 28px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* image placeholder / render slot */
.shot {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--grad-soft);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.shot::after {
  /* faint grid texture so empty slots still read as "render" */
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: .5; pointer-events: none;
}
.shot > img {
  position: absolute; inset: 0; z-index: 2;
  width: 100%; height: 100%; object-fit: cover;
  background: var(--paper-2);
}
.shot__cap {
  position: absolute; inset: 0; z-index: 1;
  display: flex; flex-direction: column; gap: 6px;
  align-items: center; justify-content: center;
  text-align: center; padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.74rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--text-faint);
}
.shot__cap b { color: var(--violet); font-weight: 700; letter-spacing: .14em; }
.shot__cap span { max-width: 34ch; font-size: .68rem; letter-spacing: .04em; text-transform: none; line-height: 1.5; }

.ratio-21x9 { aspect-ratio: 21 / 9; }
.ratio-16x9 { aspect-ratio: 16 / 9; }
.ratio-4x3  { aspect-ratio: 4 / 3; }
.ratio-1x1  { aspect-ratio: 1 / 1; }
.ratio-3x4  { aspect-ratio: 3 / 4; }

/* ============================================================
   LOGO STRIP / qualifiers
   ============================================================ */
.qualifiers {
  border-block: 1px solid var(--line);
  background: var(--paper);
}
.qualifiers__inner {
  display: flex; flex-wrap: wrap; gap: 14px 48px;
  justify-content: center; align-items: center;
  padding-block: 26px;
}
.qualifiers__item {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 0.92rem; color: var(--text-dim);
}
.qualifiers__item svg { color: var(--violet); flex: none; }

/* ============================================================
   GRID + CARDS
   ============================================================ */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--mt { margin-top: 56px; }

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--line-strong); }
.card__num {
  font-family: var(--font-mono);
  font-size: 0.78rem; color: var(--violet);
  letter-spacing: .1em;
}
.card h3 {
  font-family: var(--font-display);
  font-weight: 500; font-size: 1.18rem;
  letter-spacing: -0.01em;
  margin: 16px 0 8px;
}
.card p { color: var(--text-dim); font-size: 0.98rem; }
.card__icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center;
  background: var(--grad-soft);
  border: 1px solid var(--line);
  color: var(--violet);
  margin-bottom: 18px;
}
.section--tint .card { background: #fff; }

/* ============================================================
   HOW IT WORKS — split + anti-phase diagram
   ============================================================ */
.split {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 96px); align-items: center;
}
.split--reverse .split__media { order: 2; }
.split__body .section__title { font-size: clamp(1.8rem, 3.4vw, 2.6rem); }

.layers { margin-top: 36px; display: grid; gap: 18px; }
.layer {
  display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: start;
  padding: 22px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--paper);
}
.layer__tag {
  font-family: var(--font-mono); font-size: .7rem; letter-spacing: .12em;
  text-transform: uppercase; color: #fff;
  background: var(--ink); border-radius: 7px; padding: 7px 9px; white-space: nowrap;
  align-self: start;
}
.layer--active .layer__tag { background: var(--violet); }
.layer h4 { font-family: var(--font-display); font-weight: 500; font-size: 1.06rem; margin-bottom: 5px; }
.layer p { color: var(--text-dim); font-size: 0.95rem; }

.wave-card {
  background: var(--ink); border-radius: var(--radius-lg);
  padding: clamp(28px, 4vw, 48px);
  color: #dfe2f5; box-shadow: var(--shadow-lg);
  position: relative; overflow: hidden;
}
.wave-card__glow {
  position: absolute; inset: -30% -10% auto auto; width: 70%; aspect-ratio: 1;
  background: radial-gradient(closest-side, rgba(91,99,245,.5), transparent 70%);
  filter: blur(20px); pointer-events: none;
}
.wave-card h4 { color: #fff; font-family: var(--font-display); font-weight: 500; font-size: 1.1rem; position: relative; }
.wave-card p { color: #aab0d4; font-size: .92rem; margin-top: 6px; position: relative; }
.wave-svg { width: 100%; height: auto; margin: 18px 0; position: relative; }
.wave-legend {
  display: flex; gap: 22px; flex-wrap: wrap; font-size: .8rem;
  font-family: var(--font-mono); letter-spacing: .04em; color: #9aa0c8;
  position: relative;
}
.wave-legend i { width: 22px; height: 0; border-top: 2px solid; display: inline-block; margin-right: 8px; vertical-align: middle; }

/* ============================================================
   SYSTEM — configuration switcher
   ============================================================ */
.system-head {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(28px, 5vw, 76px);
  align-items: end;
}
.system-head .section__title { max-width: 15ch; }
.system-head__lede { margin-top: 0; }

.configs__tabs {
  display: flex; flex-wrap: wrap; gap: 10px; margin: 48px 0 30px;
}
.config-tab {
  padding: 11px 18px; border-radius: 100px;
  border: 1px solid var(--line-strong); background: var(--paper);
  font-size: .92rem; color: var(--text-dim);
  transition: all .2s var(--ease);
}
.config-tab:hover { border-color: var(--ink); color: var(--text); }
.config-tab.is-active { background: var(--ink); color: #fff; border-color: var(--ink); }

.config-stage { display: block; }
.config-panel { display: none; }
.config-panel.is-active {
  display: grid; grid-template-columns: 1.22fr 0.9fr;
  gap: clamp(32px, 5vw, 68px); align-items: center;
  animation: fade .4s var(--ease);
}
.config-panel .shot { box-shadow: var(--shadow-lg); }
.config-panel__body h3 {
  font-family: var(--font-display); font-weight: 600; font-size: clamp(1.5rem, 3vw, 2.1rem);
  letter-spacing: -.02em; margin-bottom: 14px;
}
.config-panel__body p { color: var(--text-dim); font-size: 1.04rem; max-width: 44ch; }
.config-panel__spec {
  margin-top: 22px; display: flex; gap: 28px; flex-wrap: wrap;
}
.config-panel__spec dt { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text-faint); }
.config-panel__spec dd { font-family: var(--font-display); font-size: 1.5rem; font-weight: 500; margin-top: 4px; }

@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ============================================================
   SPACES
   ============================================================ */
.space-card {
  position: relative; border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--line);
  min-height: 320px; display: flex; flex-direction: column; justify-content: flex-end;
  background: var(--grad-soft);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.space-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.space-card > img { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; object-fit: cover; }
.space-card__scrim {
  position: absolute; inset: 0; z-index: 2;
  background: linear-gradient(180deg, transparent 38%, rgba(8,9,14,.78));
}
.space-card__txt { position: relative; z-index: 3; padding: 26px; color: #fff; }
.space-card__txt .tag { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: #c7caff; }
.space-card__txt h3 { font-family: var(--font-display); font-weight: 500; font-size: 1.3rem; margin: 8px 0 6px; }
.space-card__txt p { color: #d4d6e8; font-size: .92rem; }
/* empty-slot caption visible until img drops in */
.space-card__cap {
  position: absolute; top: 16px; left: 16px; z-index: 2;
  font-family: var(--font-mono); font-size: .62rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--text-faint);
}
.space-card.is-tall { grid-row: span 2; min-height: 100%; }

/* ============================================================
   DESIGN feature
   ============================================================ */
.feature-list { margin-top: 30px; display: grid; gap: 2px; }
.feature-list li {
  display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: baseline;
  padding: 18px 0; border-top: 1px solid var(--line);
}
.feature-list li:last-child { border-bottom: 1px solid var(--line); }
.feature-list .k { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--violet); }
.feature-list .v { font-size: 1rem; color: var(--text); }
.feature-list .v b { font-weight: 500; }
.feature-list .v span { color: var(--text-dim); }

/* ============================================================
   SCIENCE / honest physics
   ============================================================ */
.science-grid { margin-top: 50px; }
.sci {
  padding: 26px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--paper);
}
.sci__hz { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; color: var(--violet); text-transform: uppercase; }
.sci h4 { font-family: var(--font-display); font-weight: 500; font-size: 1.12rem; margin: 12px 0 8px; }
.sci p { color: var(--text-dim); font-size: .95rem; }
.note {
  margin-top: 40px; padding: 22px 26px; border-radius: var(--radius-sm);
  border: 1px dashed var(--line-strong); background: var(--paper-2);
  color: var(--text-dim); font-size: .95rem; max-width: 70ch;
}
.note b { color: var(--text); font-weight: 500; }

/* ============================================================
   SPECS table
   ============================================================ */
.specs { margin-top: 50px; border-top: 1px solid var(--line); }
.spec-row {
  display: grid; grid-template-columns: 230px 1fr; gap: 24px;
  padding: 20px 0; border-bottom: 1px solid var(--line); align-items: baseline;
}
.spec-row dt { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; color: var(--text-faint); }
.spec-row dd { font-size: 1.04rem; color: var(--text); }
.spec-row dd small { color: var(--text-dim); }

/* ============================================================
   WAITLIST
   ============================================================ */
.cta {
  text-align: center;
  background: var(--ink); color: #fff;
  border-radius: var(--radius-lg);
  padding: clamp(48px, 7vw, 92px) 32px;
  position: relative; overflow: hidden;
}
.cta__halo {
  position: absolute; left: 50%; top: -40%; translate: -50% 0;
  width: 700px; aspect-ratio: 1; pointer-events: none;
  background: radial-gradient(closest-side, rgba(91,99,245,.42), rgba(86,198,230,.16) 55%, transparent 72%);
  filter: blur(14px);
}
.cta h2 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2rem, 4.4vw, 3.1rem); letter-spacing: -.025em; line-height: 1.05;
  position: relative;
}
.cta p { color: #b6bae0; margin: 18px auto 0; max-width: 50ch; position: relative; }
.waitlist-form {
  position: relative; margin: 36px auto 0; max-width: 480px;
  display: flex; gap: 10px;
}
.waitlist-form input {
  flex: 1; padding: 15px 20px; border-radius: 100px;
  border: 1px solid rgba(255,255,255,.2); background: rgba(255,255,255,.06);
  color: #fff; font-size: 1rem; font-family: var(--font-sans);
}
.waitlist-form input::placeholder { color: #8c91b8; }
.waitlist-form input:focus { outline: 2px solid var(--violet-soft); outline-offset: 1px; }
.waitlist-form input[aria-invalid="true"] { border-color: #ff8f8f; }
.waitlist-confirm {
  position: relative; margin-top: 30px;
  font-family: var(--font-display); font-size: 1.2rem; color: #fff;
}
.cta__fine { position: relative; margin-top: 18px; font-size: .8rem; color: #8c91b8; }

/* ============================================================
   FAQ
   ============================================================ */
.faq { margin-top: 48px; max-width: 820px; }
.faq details {
  border-bottom: 1px solid var(--line); padding: 6px 0;
}
.faq summary {
  list-style: none; cursor: pointer; padding: 20px 0;
  display: flex; justify-content: space-between; align-items: center; gap: 20px;
  font-family: var(--font-display); font-weight: 500; font-size: 1.1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; font-family: var(--font-mono); font-size: 1.4rem; color: var(--violet);
  transition: transform .25s var(--ease);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--text-dim); padding: 0 0 22px; max-width: 64ch; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { border-top: 1px solid var(--line); padding-block: 56px 40px; background: var(--paper); }
.footer__inner { display: flex; flex-wrap: wrap; gap: 40px; justify-content: space-between; align-items: flex-start; }
.footer__brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; }
.footer__tagline { color: var(--text-dim); margin-top: 12px; max-width: 34ch; font-size: .95rem; }
.footer__nav { display: flex; gap: 60px; flex-wrap: wrap; }
.footer__col h5 { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 14px; }
.footer__col a { display: block; color: var(--text-dim); font-size: .94rem; padding: 5px 0; transition: color .2s; }
.footer__col a:hover { color: var(--text); }
.footer__legal { border-top: 1px solid var(--line); margin-top: 44px; padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: var(--text-faint); font-size: .84rem; }

/* ============================================================
   FILM MODAL
   ============================================================ */
.film-modal {
  position: fixed; inset: 0; z-index: 100;
  display: grid; place-items: center;
  padding: clamp(16px, 4vw, 44px);
}
.film-modal[hidden] { display: none; }
.film-modal__backdrop {
  position: absolute; inset: 0;
  background: rgba(6,7,12,.85);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  animation: fade .3s var(--ease);
}
.film-modal__inner {
  position: relative; width: min(1040px, 100%);
  animation: fade .35s var(--ease);
}
.film-modal__video {
  width: 100%; aspect-ratio: 16 / 9; display: block;
  border-radius: var(--radius); background: #000; box-shadow: var(--shadow-lg);
}
.film-modal__close {
  position: absolute; top: -46px; right: 0;
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.3); background: rgba(255,255,255,.08);
  color: #fff; font-size: 1.4rem; line-height: 1;
  display: grid; place-items: center; transition: background .2s var(--ease);
}
.film-modal__close:hover { background: rgba(255,255,255,.2); }
@media (max-width: 560px) { .film-modal__close { top: -42px; } }

/* ============================================================
   reveal
   ============================================================ */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .07s; }
.reveal[data-d="2"] { transition-delay: .14s; }
.reveal[data-d="3"] { transition-delay: .21s; }
.reveal[data-d="4"] { transition-delay: .28s; }

/* ============================================================
   responsive
   ============================================================ */
@media (max-width: 960px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .system-head { grid-template-columns: 1fr; gap: 22px; }
  .config-panel.is-active { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
  .space-card.is-tall { grid-row: span 1; }
}
@media (max-width: 720px) {
  .nav__links { display: none; }
  .nav__burger {
    display: inline-flex; align-items: center; justify-content: center;
    width: 42px; height: 42px; border-radius: 11px; border: 1px solid var(--line-strong);
    background: var(--paper);
  }
  .nav.is-open .nav__links {
    display: flex; flex-direction: column; gap: 4px;
    position: absolute; top: 72px; left: 0; right: 0;
    background: rgba(255,255,255,.96); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line); padding: 16px 24px 24px;
  }
  .nav.is-open .nav__links a { padding: 10px 0; font-size: 1.05rem; }
  .nav__cta { display: none; }
  .grid--4, .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .spec-row { grid-template-columns: 1fr; gap: 4px; }
  .waitlist-form { flex-direction: column; }
  .waitlist-form .btn { width: 100%; }
  .footer__inner { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}