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

:root {
  --bg-deep: #04040a;
  --bg-dark: #070914;
  --bg-mid: #101322;
  --card: #15192b;
  --accent: #f0ff8f;
  --accent-strong: #fbffd0;
  --accent-soft: rgba(240, 255, 143, 0.16);
  --electric: #7c8bff;
  --text-main: #f7f7fb;
  --text-muted: #a8adc5;
  --border-subtle: #262a3c;
  --shadow-soft: 0 22px 55px rgba(0, 0, 0, 0.75);
  --radius: 16px;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-main);
  background: radial-gradient(circle at top, #141a33 0, var(--bg-deep) 60%);
  scroll-behavior: smooth;
}

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

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

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* HEADER */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(5, 6, 12, 0.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
}

.nav a {
  margin-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

/* HERO */

.hero {
  padding: 4.4rem 0 3.6rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 2.6rem;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  color: var(--accent-strong);
  margin-bottom: 0.5rem;
}

.hero-text h1 {
  font-size: 2.5rem;
  margin: 0 0 0.6rem;
}

.hero-sub {
  max-width: 32rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.hero-ctas {
  margin: 1.9rem 0 1.1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.hero-ctas.secondary-row {
  margin-top: 1.2rem;
}

.tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.hero-diagram {
  max-width: 420px;
  justify-self: center;
}

/* Glow card */

.glow-card {
  background: radial-gradient(circle at top, var(--accent-soft), var(--bg-dark));
  border-radius: 28px;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow-soft);
}

/* BUTTONS */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.35rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.17s ease;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), #ffffff);
  color: #141414;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.55);
}

.btn.primary:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
}

.btn.secondary {
  background: transparent;
  border-color: var(--border-subtle);
  color: var(--text-main);
}

.btn.secondary:hover {
  border-color: var(--accent);
}

.btn.stripe {
  background: linear-gradient(135deg, var(--electric), #9b7dff);
  border-color: transparent;
  color: #ffffff;
}

.btn.stripe:hover {
  transform: translateY(-1px);
  filter: brightness(1.07);
}

.btn.small-btn {
  padding-inline: 1.1rem;
  font-size: 0.9rem;
}

/* WAITLIST FORM */

.waitlist-form {
  margin-top: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: center;
}

.waitlist-form input {
  padding: 0.6rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  backgr