/* ==========================================================================
   ICARENGINE — Design System
   Premium dark interface · deep black / navy / violet / cyan / magenta
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  --bg-0: #04050a;
  --bg-1: #080b16;
  --bg-2: #0d1122;
  --bg-3: #12172e;

  --ink: #eef1f8;
  --ink-dim: #b8bfd2;
  --muted: #8b93a9;
  --faint: #5a627a;

  --cyan: #3ee6ff;
  --cyan-soft: rgba(62, 230, 255, 0.14);
  --magenta: #ff4fd8;
  --magenta-soft: rgba(255, 79, 216, 0.12);
  --violet: #8b6bff;
  --violet-soft: rgba(139, 107, 255, 0.14);

  --glass: rgba(255, 255, 255, 0.04);
  --glass-strong: rgba(255, 255, 255, 0.07);
  --stroke: rgba(255, 255, 255, 0.09);
  --stroke-bright: rgba(255, 255, 255, 0.18);

  --grad-brand: linear-gradient(100deg, var(--cyan) 0%, var(--violet) 52%, var(--magenta) 100%);
  --grad-panel: linear-gradient(160deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0.02) 100%);

  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 22px;

  --container: 1180px;
  --nav-h: 68px;
  --banner-h: 42px;

  --shadow-deep: 0 30px 80px rgba(0, 0, 0, 0.55);
  --ring-cyan: 0 0 0 1px rgba(62,230,255,0.35), 0 0 34px rgba(62,230,255,0.18);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + var(--banner-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg-0);
  color: var(--ink-dim);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img, svg, video, canvas { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
p { margin: 0 0 1em; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.08;
  margin: 0 0 0.5em;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

::selection { background: rgba(62, 230, 255, 0.28); color: #fff; }

/* Accessible focus */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 3000;
  background: var(--cyan);
  color: #04121a;
  font-weight: 700;
  padding: 0.7rem 1.2rem;
  border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Layout helpers ---------- */
.container {
  width: min(var(--container), calc(100% - 3rem));
  margin-inline: auto;
}

.section { padding: clamp(4.5rem, 9vw, 7.5rem) 0; position: relative; }
.section--tight { padding: clamp(3rem, 6vw, 5rem) 0; }

.section-head { max-width: 720px; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section-head--center { margin-inline: auto; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 1.1rem;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--grad-brand);
}
.section-head--center .eyebrow::after {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--grad-brand);
}

.section-title {
  font-size: clamp(1.9rem, 4.4vw, 3rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

.section-lede { color: var(--muted); font-size: 1.06rem; max-width: 60ch; }
.section-head--center .section-lede { margin-inline: auto; }

.text-gradient {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Technical grid overlay */
.grid-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.028) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 20%, transparent 75%);
}

/* ---------- Launch banner ---------- */
.launch-banner {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1200;
  height: var(--banner-h);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0 3rem 0 1rem;
  background: linear-gradient(90deg, rgba(20,6,32,0.92), rgba(6,16,34,0.92));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--stroke);
  font-size: 0.82rem;
  color: var(--ink-dim);
}
.launch-banner strong { color: var(--ink); font-weight: 600; }
.launch-banner .code-chip { margin: 0; }
.launch-banner__close {
  position: absolute;
  right: 0.4rem;
  top: 50%;
  translate: 0 -50%;
  width: 32px; height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
}
.launch-banner__close:hover { color: var(--ink); background: var(--glass-strong); }
body.banner-hidden .launch-banner { display: none; }
body.banner-hidden { --banner-h: 0px; }

/* Discount code chip */
.code-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--cyan);
  background: var(--cyan-soft);
  border: 1px dashed rgba(62,230,255,0.45);
  border-radius: 999px;
  padding: 0.28rem 0.5rem 0.28rem 0.9rem;
}
.code-chip button {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #04121a;
  background: var(--cyan);
  border-radius: 999px;
  padding: 0.22rem 0.7rem;
  transition: filter 0.2s;
}
.code-chip button:hover { filter: brightness(1.15); }
.code-chip button.copied { background: var(--magenta); color: #1a0414; }

/* ---------- Navigation ---------- */
.site-nav {
  position: fixed;
  top: var(--banner-h);
  left: 0; right: 0;
  z-index: 1100;
  height: var(--nav-h);
  transition: background 0.3s, border-color 0.3s, top 0.2s;
  border-bottom: 1px solid transparent;
}
.site-nav.scrolled {
  background: rgba(5, 6, 12, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--stroke);
}
.site-nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.06rem;
  letter-spacing: 0.42em;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  white-space: nowrap;
}
.brand svg { width: 24px; height: 24px; flex: none; }

.site-nav__links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.site-nav__links a {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}
.site-nav__links a:hover { color: var(--ink); background: var(--glass); }
.site-nav__links a.active { color: var(--cyan); }
.site-nav__links a.nav-cta {
  color: #04121a;
  background: var(--grad-brand);
  margin-left: 0.5rem;
  box-shadow: 0 4px 24px rgba(62,230,255,0.25);
}
.site-nav__links a.nav-cta:hover { filter: brightness(1.1); color: #04121a; }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: 10px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 20px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.2s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.86rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.95rem 1.9rem;
  border-radius: 12px;
  transition: transform 0.2s, box-shadow 0.2s, filter 0.2s, background 0.2s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  color: #04121a;
  background: var(--grad-brand);
  box-shadow: 0 8px 30px rgba(62,230,255,0.28), 0 2px 10px rgba(255,79,216,0.2);
}
.btn--primary:hover { filter: brightness(1.12); box-shadow: 0 10px 40px rgba(62,230,255,0.4); color: #04121a; }

.btn--ghost {
  color: var(--ink);
  background: var(--glass);
  border: 1px solid var(--stroke-bright);
}
.btn--ghost:hover { background: var(--glass-strong); border-color: rgba(255,255,255,0.3); color: #fff; }

.btn--line {
  color: var(--cyan);
  border: 1px solid rgba(62,230,255,0.4);
}
.btn--line:hover { background: var(--cyan-soft); box-shadow: var(--ring-cyan); color: var(--cyan); }

.btn svg { width: 16px; height: 16px; flex: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + var(--banner-h) + 4rem) 0 5rem;
  overflow: hidden;
  background:
    radial-gradient(ellipse 60% 45% at 70% 18%, rgba(139,107,255,0.16), transparent 60%),
    radial-gradient(ellipse 55% 40% at 20% 75%, rgba(62,230,255,0.1), transparent 62%),
    radial-gradient(ellipse 45% 35% at 85% 80%, rgba(255,79,216,0.09), transparent 60%),
    linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
}
#orbital-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.85;
}
.hero .grid-bg { z-index: 1; }
.hero__inner { position: relative; z-index: 2; width: 100%; }

.hero__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.3rem, 8.5vw, 6.2rem);
  letter-spacing: clamp(0.18em, 2vw, 0.34em);
  margin: 0 0 0.4rem;
  text-indent: clamp(0.18em, 2vw, 0.34em); /* balance letterspacing */
  text-align: center;
  color: var(--ink);
  text-shadow: 0 0 90px rgba(62,230,255,0.35);
}
.hero__product {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  color: var(--violet);
  margin-bottom: 2.2rem;
}
.hero__headline {
  text-align: center;
  font-size: clamp(1.35rem, 3.4vw, 2.4rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  max-width: 900px;
  margin: 0 auto 1.1rem;
}
.hero__sub {
  text-align: center;
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 1.6vw, 1.05rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 2;
  margin: 0 auto 2.4rem;
}
.hero__sub span { color: var(--cyan); }
.hero__sub span:nth-child(2) { color: var(--violet); }
.hero__sub span:nth-child(3) { color: var(--magenta); }

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.6rem;
}
.hero__offer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.9rem;
  font-size: 0.88rem;
  color: var(--muted);
}
.hero__price {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--ink);
}

/* Product visual frame */
.hero__visual {
  margin: 3.5rem auto 0;
  max-width: 940px;
  position: relative;
}
.hero__visual::before {
  content: "";
  position: absolute;
  inset: -18%;
  background: radial-gradient(ellipse 50% 50% at 50% 50%, rgba(139,107,255,0.18), transparent 70%);
  pointer-events: none;
}
.product-frame {
  position: relative;
  border-radius: var(--radius-l);
  border: 1px solid var(--stroke-bright);
  background: linear-gradient(165deg, #10142a 0%, #070a15 100%);
  box-shadow: var(--shadow-deep), inset 0 1px 0 rgba(255,255,255,0.08);
  overflow: hidden;
}
.product-frame svg { width: 100%; height: auto; }

/* ---------- Engine index cards ---------- */
.engine-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.1rem;
}
.engine-card {
  position: relative;
  border-radius: var(--radius-m);
  border: 1px solid var(--stroke);
  background: var(--grad-panel);
  padding: 1.6rem 1.5rem 1.5rem;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
  overflow: hidden;
}
.engine-card:hover {
  border-color: rgba(62,230,255,0.35);
  transform: translateY(-3px);
  box-shadow: 0 18px 44px rgba(0,0,0,0.4), 0 0 0 1px rgba(62,230,255,0.12);
}
.engine-card__num {
  position: absolute;
  top: 1.1rem;
  right: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--faint);
}
.engine-card__icon {
  width: 42px; height: 42px;
  margin-bottom: 1.1rem;
  color: var(--cyan);
}
.engine-card:nth-child(3n+2) .engine-card__icon { color: var(--violet); }
.engine-card:nth-child(3n) .engine-card__icon { color: var(--magenta); }
.engine-card h3 {
  font-size: 1.02rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}
.engine-card p { font-size: 0.9rem; color: var(--muted); margin: 0; }

/* ---------- Deep-dive feature rows ---------- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding: clamp(2.6rem, 5vw, 4.2rem) 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.feature-row:first-of-type { border-top: 0; }
.feature-row--flip .feature-row__media { order: 2; }

.feature-row__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 0.9rem;
}
.feature-row h3 {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.feature-row p { color: var(--muted); }
.feature-row ul {
  margin-top: 1.1rem;
  display: grid;
  gap: 0.55rem;
}
.feature-row li {
  position: relative;
  padding-left: 1.35rem;
  font-size: 0.92rem;
  color: var(--ink-dim);
}
.feature-row li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.52em;
  width: 7px; height: 7px;
  border-radius: 2px;
  background: var(--grad-brand);
}

.feature-row__media {
  border-radius: var(--radius-m);
  border: 1px solid var(--stroke);
  background:
    radial-gradient(ellipse 70% 60% at 50% 40%, rgba(139,107,255,0.08), transparent 70%),
    linear-gradient(160deg, #0d1124 0%, #060812 100%);
  padding: clamp(1.2rem, 3vw, 2rem);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
}
.feature-row__media svg { width: 100%; height: auto; }

/* Diagram animation hooks */
.diagram .orbit-spin { transform-origin: center; animation: spin 26s linear infinite; }
.diagram .orbit-spin--rev { transform-origin: center; animation: spin 38s linear infinite reverse; }
.diagram .pulse { animation: pulse 3.2s ease-in-out infinite; }
.diagram .dash-flow { stroke-dasharray: 6 8; animation: dash 2.6s linear infinite; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%, 100% { opacity: 0.45; } 50% { opacity: 1; } }
@keyframes dash { to { stroke-dashoffset: -28; } }

/* ---------- Interactive orbital demo ---------- */
.orbital-demo {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.2rem;
  border-radius: var(--radius-l);
  border: 1px solid var(--stroke);
  background: var(--grad-panel);
  padding: 1.2rem;
  box-shadow: var(--shadow-deep);
}
.orbital-demo__stage {
  position: relative;
  border-radius: var(--radius-m);
  overflow: hidden;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, #0b0f22 0%, #04050c 100%);
  border: 1px solid rgba(255,255,255,0.06);
  min-height: 380px;
}
#demo-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.orbital-demo__hud {
  position: absolute;
  left: 1rem; bottom: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--faint);
  pointer-events: none;
}

.orbital-demo__panel {
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
  padding: 1.4rem 1.3rem;
  border-radius: var(--radius-m);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
}
.orbital-demo__panel h3 {
  font-size: 0.85rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin: 0;
  color: var(--cyan);
}
.control { display: grid; gap: 0.45rem; }
.control__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.control label {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.control output {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--cyan);
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 26px;
  background: transparent;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, rgba(62,230,255,0.5), rgba(139,107,255,0.5), rgba(255,79,216,0.5));
}
input[type="range"]::-moz-range-track {
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, rgba(62,230,255,0.5), rgba(139,107,255,0.5), rgba(255,79,216,0.5));
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  margin-top: -7px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 14px rgba(62,230,255,0.55);
}
input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 14px rgba(62,230,255,0.55);
}
input[type="range"]:focus-visible { outline: 2px solid var(--cyan); outline-offset: 4px; }

.orbital-demo__note {
  font-size: 0.75rem;
  color: var(--faint);
  margin: 0;
}

/* ---------- Video demos ---------- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.2rem;
}
.video-card {
  border-radius: var(--radius-m);
  border: 1px solid var(--stroke);
  background: var(--grad-panel);
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s;
}
.video-card:hover { border-color: rgba(139,107,255,0.4); transform: translateY(-3px); }
.video-card video { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; background: #05060d; }
.video-card figcaption {
  padding: 0.95rem 1.2rem 1.1rem;
}
.video-card figcaption strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.92rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 0.2rem;
}
.video-card figcaption span { font-size: 0.82rem; color: var(--muted); }

/* ---------- Audio demos ---------- */
.audio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(255px, 1fr));
  gap: 1rem;
}
.audio-player {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.4rem 1rem;
  align-items: center;
  padding: 1.05rem 1.2rem;
  border-radius: var(--radius-m);
  border: 1px solid var(--stroke);
  background: var(--grad-panel);
  transition: border-color 0.25s, box-shadow 0.25s;
}
.audio-player.is-playing {
  border-color: rgba(62,230,255,0.45);
  box-shadow: 0 0 0 1px rgba(62,230,255,0.15), 0 12px 34px rgba(0,0,0,0.4);
}
.audio-player__btn {
  grid-row: span 2;
  width: 46px; height: 46px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #04121a;
  background: var(--grad-brand);
  box-shadow: 0 4px 18px rgba(62,230,255,0.3);
  transition: filter 0.2s, transform 0.2s;
}
.audio-player__btn:hover { filter: brightness(1.15); transform: scale(1.05); }
.audio-player__btn svg { width: 16px; height: 16px; }
.audio-player__btn .icon-pause { display: none; }
.audio-player.is-playing .icon-play { display: none; }
.audio-player.is-playing .icon-pause { display: block; }

.audio-player__meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.6rem;
  min-width: 0;
}
.audio-player__title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.audio-player__time {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--faint);
  flex: none;
}
.audio-player__bar {
  position: relative;
  height: 5px;
  border-radius: 3px;
  background: rgba(255,255,255,0.08);
  overflow: hidden;
  cursor: pointer;
}
.audio-player__bar > span {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  background: var(--grad-brand);
  border-radius: 3px;
}
.audio-player__tag {
  grid-column: 2;
  font-size: 0.72rem;
  color: var(--muted);
}
.audio-player.unavailable .audio-player__btn { filter: grayscale(1) brightness(0.6); }

/* ---------- Gallery ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.1rem;
}
.gallery-item {
  position: relative;
  border-radius: var(--radius-m);
  border: 1px solid var(--stroke);
  overflow: hidden;
  padding: 0;
  background: var(--bg-2);
  cursor: zoom-in;
  transition: border-color 0.25s, transform 0.25s;
  text-align: left;
  width: 100%;
}
.gallery-item:hover { border-color: rgba(255,79,216,0.4); transform: translateY(-3px); }
.gallery-item img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.gallery-item figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.6rem 1rem 0.8rem;
  background: linear-gradient(transparent, rgba(3,4,9,0.92));
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(2, 3, 7, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 2rem;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: min(1100px, 92vw);
  max-height: 78vh;
  border-radius: var(--radius-m);
  border: 1px solid var(--stroke-bright);
  box-shadow: var(--shadow-deep);
}
.lightbox__caption {
  position: absolute;
  bottom: 2.2rem;
  left: 50%;
  translate: -50% 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-dim);
  text-align: center;
  max-width: 90vw;
}
.lightbox__btn {
  position: absolute;
  top: 50%;
  translate: 0 -50%;
  width: 52px; height: 52px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--glass-strong);
  border: 1px solid var(--stroke-bright);
  color: var(--ink);
  font-size: 1.5rem;
  transition: background 0.2s;
}
.lightbox__btn:hover { background: rgba(255,255,255,0.14); }
.lightbox__btn--prev { left: 1.2rem; }
.lightbox__btn--next { right: 1.2rem; }
.lightbox__close {
  position: absolute;
  top: 1.2rem; right: 1.2rem;
  width: 46px; height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--glass-strong);
  border: 1px solid var(--stroke-bright);
  color: var(--ink);
  font-size: 1.2rem;
}
.lightbox__close:hover { background: rgba(255,79,216,0.25); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 780px; margin-inline: auto; display: grid; gap: 0.8rem; }
.faq-item {
  border: 1px solid var(--stroke);
  border-radius: var(--radius-m);
  background: var(--grad-panel);
  overflow: hidden;
  transition: border-color 0.25s;
}
.faq-item[open] { border-color: rgba(62,230,255,0.35); }
.faq-item summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 1.4rem;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--ink);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  flex: none;
  width: 28px; height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--stroke-bright);
  color: var(--cyan);
  font-size: 1.05rem;
  font-weight: 400;
  transition: transform 0.25s, background 0.25s;
}
.faq-item[open] summary::after { transform: rotate(45deg); background: var(--cyan-soft); }
.faq-item__body { padding: 0 1.4rem 1.3rem; color: var(--muted); font-size: 0.94rem; }
.faq-item__body .tbc {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--violet);
}

/* ---------- Buy section ---------- */
.buy-wrap {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-l);
  border: 1px solid var(--stroke-bright);
  background:
    radial-gradient(ellipse 65% 90% at 50% -10%, rgba(139,107,255,0.22), transparent 62%),
    radial-gradient(ellipse 40% 60% at 90% 100%, rgba(255,79,216,0.14), transparent 65%),
    linear-gradient(180deg, #0c1024 0%, #06080f 100%);
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1.5rem, 5vw, 4rem);
  text-align: center;
  box-shadow: var(--shadow-deep);
}
.buy-wrap .grid-bg { mask-image: radial-gradient(ellipse 80% 80% at 50% 20%, #000 10%, transparent 70%); }
.buy-wrap__inner { position: relative; z-index: 1; }

.price-line {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 1rem;
  margin: 1.6rem 0 0.5rem;
  flex-wrap: wrap;
}
.price-line__now {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 7vw, 4.6rem);
  color: var(--ink);
  line-height: 1;
}
.price-line__meta {
  text-align: left;
  font-size: 0.82rem;
  color: var(--muted);
}
.price-line__meta strong { color: var(--magenta); }
.buy-note { font-size: 0.82rem; color: var(--faint); margin-top: 1.4rem; }
.buy-note a { color: var(--muted); text-decoration: underline; }
.buy-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.8rem;
}
.buy-secure {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faint);
}
.buy-secure svg { width: 14px; height: 14px; color: var(--cyan); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid rgba(255,255,255,0.07);
  background: linear-gradient(180deg, var(--bg-0), #020308);
  padding: 4rem 0 2.5rem;
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
.site-footer__brand p {
  font-size: 0.88rem;
  color: var(--muted);
  max-width: 34ch;
  margin-top: 1rem;
}
.site-footer h4 {
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 1.1rem;
}
.site-footer__grid ul { display: grid; gap: 0.6rem; }
.site-footer__grid ul a {
  font-size: 0.9rem;
  color: var(--ink-dim);
  transition: color 0.2s;
}
.site-footer__grid ul a:hover { color: var(--cyan); }

.social-row { display: flex; gap: 0.7rem; margin-top: 1.4rem; }
.social-row a {
  width: 38px; height: 38px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  color: var(--muted);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.social-row a:hover { color: var(--cyan); border-color: rgba(62,230,255,0.4); background: var(--cyan-soft); }
.social-row svg { width: 16px; height: 16px; }

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 1.8rem;
  font-size: 0.78rem;
  color: var(--faint);
}
.site-footer__bottom a { color: var(--muted); }

/* ---------- Docs portal ---------- */
.docs-layout {
  display: grid;
  grid-template-columns: 262px 1fr;
  gap: clamp(2rem, 4vw, 4rem);
  padding-top: calc(var(--nav-h) + var(--banner-h) + 3rem);
  padding-bottom: 5rem;
  align-items: start;
}
.docs-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + var(--banner-h) + 1.5rem);
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  max-height: calc(100vh - var(--nav-h) - var(--banner-h) - 3rem);
  overflow-y: auto;
  padding-right: 0.4rem;
}
.docs-search { position: relative; }
.docs-search input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: var(--glass);
  color: var(--ink);
  font: inherit;
  font-size: 0.9rem;
}
.docs-search input::placeholder { color: var(--faint); }
.docs-search input:focus { outline: 2px solid var(--cyan); outline-offset: 1px; }
.docs-search svg {
  position: absolute;
  left: 0.85rem; top: 50%;
  translate: 0 -50%;
  width: 15px; height: 15px;
  color: var(--faint);
  pointer-events: none;
}
.docs-search__meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--faint);
  margin-top: 0.5rem;
  min-height: 1em;
}

.docs-nav { display: grid; gap: 0.15rem; }
.docs-nav a {
  display: block;
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  font-size: 0.86rem;
  color: var(--muted);
  border-left: 2px solid transparent;
  transition: color 0.2s, background 0.2s;
}
.docs-nav a:hover { color: var(--ink); background: var(--glass); }
.docs-nav a.active {
  color: var(--cyan);
  background: var(--cyan-soft);
  border-left-color: var(--cyan);
  border-radius: 0 8px 8px 0;
}

.docs-content { min-width: 0; }
.docs-content > header { margin-bottom: 3rem; }
.doc-section {
  padding: 2.4rem 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  scroll-margin-top: calc(var(--nav-h) + var(--banner-h) + 1.5rem);
}
.doc-section:first-of-type { border-top: 0; padding-top: 0; }
.doc-section h2 {
  font-size: 1.45rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.doc-section h2::before {
  content: "";
  width: 9px; height: 9px;
  border-radius: 3px;
  background: var(--grad-brand);
  flex: none;
}
.doc-section h3 { font-size: 1.02rem; margin-top: 1.8rem; color: var(--ink); }
.doc-section p, .doc-section li { color: var(--muted); font-size: 0.95rem; }
.doc-section ul, .doc-section ol { padding-left: 1.2rem; display: grid; gap: 0.45rem; margin: 0.8rem 0; }
.doc-section ul { list-style: square; }
.doc-section ol { list-style: decimal; }
.doc-section li::marker { color: var(--cyan); }
.doc-section code {
  font-family: var(--font-mono);
  font-size: 0.82em;
  background: rgba(255,255,255,0.07);
  border: 1px solid var(--stroke);
  border-radius: 6px;
  padding: 0.12em 0.45em;
  color: var(--cyan);
}
.doc-section .tbc {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--violet);
  background: var(--violet-soft);
  border: 1px solid rgba(139,107,255,0.3);
  border-radius: 6px;
  padding: 0.15rem 0.6rem;
}
.doc-callout {
  border: 1px solid rgba(62,230,255,0.25);
  border-left: 3px solid var(--cyan);
  background: rgba(62,230,255,0.06);
  border-radius: 0 10px 10px 0;
  padding: 1rem 1.2rem;
  margin: 1.2rem 0;
  font-size: 0.9rem;
  color: var(--ink-dim);
}
.doc-section.search-hidden { display: none; }
mark.search-hit {
  background: rgba(255, 79, 216, 0.35);
  color: #fff;
  border-radius: 3px;
  padding: 0 2px;
}

/* ---------- Subpages (legal, 404) ---------- */
.page-main {
  padding-top: calc(var(--nav-h) + var(--banner-h) + 4rem);
  padding-bottom: 5rem;
  min-height: 70vh;
}
.page-main--narrow .container { max-width: 820px; }
.page-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  text-transform: uppercase;
}
.page-updated {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 2.5rem;
}
.legal-body h2 {
  font-size: 1.15rem;
  margin-top: 2.4rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.legal-body p, .legal-body li { color: var(--muted); font-size: 0.95rem; }
.legal-body ul { list-style: square; padding-left: 1.2rem; display: grid; gap: 0.4rem; margin: 0.8rem 0; }
.legal-body li::marker { color: var(--cyan); }
.legal-body a { text-decoration: underline; text-underline-offset: 3px; }

/* 404 */
.error-hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: 2rem;
  background:
    radial-gradient(ellipse 55% 45% at 50% 30%, rgba(139,107,255,0.16), transparent 62%),
    var(--bg-0);
}
.error-hero__code {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(6rem, 22vw, 13rem);
  line-height: 1;
  margin: 0;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.9;
}
.error-hero p { color: var(--muted); margin: 1rem 0 2rem; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .orbital-demo { grid-template-columns: 1fr; }
  .orbital-demo__stage { min-height: 320px; }
}

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .site-nav__links {
    position: fixed;
    top: calc(var(--nav-h) + var(--banner-h));
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0.2rem;
    background: rgba(4, 5, 10, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--stroke);
    padding: 1rem 1.5rem 1.4rem;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
  }
  .site-nav__links.open { opacity: 1; visibility: visible; transform: translateY(0); }
  .site-nav__links a { padding: 0.8rem 1rem; font-size: 0.9rem; }
  .site-nav__links a.nav-cta { margin: 0.6rem 0 0; text-align: center; }

  .feature-row { grid-template-columns: 1fr; gap: 1.6rem; }
  .feature-row--flip .feature-row__media { order: 0; }
  .docs-layout { grid-template-columns: 1fr; }
  .docs-sidebar { position: static; max-height: none; }
  .lightbox__btn--prev { left: 0.4rem; }
  .lightbox__btn--next { right: 0.4rem; }
}

@media (max-width: 560px) {
  .launch-banner { font-size: 0.72rem; gap: 0.5rem; white-space: nowrap; }
  .launch-banner > span:not(.code-chip) { display: none; }
  .code-chip { font-size: 0.68rem; }
  .site-footer__grid { grid-template-columns: 1fr; gap: 2rem; }
  .hero__actions .btn { width: 100%; }
  .buy-actions .btn { width: 100%; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}