:root {
  color-scheme: dark;
  --bg: #08101f;
  --panel: #0f1a2c;
  --card: #112038;
  --text: #eef4ff;
  --muted: #aab8d4;
  --accent: #77a7ff;
  --accent-2: #7df0c5;
  --border: rgba(255, 255, 255, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background:
    radial-gradient(circle at top, rgba(119, 167, 255, 0.18), transparent 30%),
    linear-gradient(180deg, #0a1222 0%, var(--bg) 100%);
  color: var(--text);
}

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

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.hero,
.panel,
.card {
  border: 1px solid var(--border);
  background: rgba(15, 26, 44, 0.82);
  backdrop-filter: blur(18px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.22);
}

.hero {
  padding: 48px;
  border-radius: 28px;
}

.eyebrow {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  color: var(--accent-2);
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 1.02;
  max-width: 12ch;
  margin-bottom: 16px;
}

.lead {
  max-width: 62ch;
  font-size: 1.08rem;
  color: var(--muted);
  line-height: 1.7;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-weight: 600;
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), #4c7dff);
  color: #061020;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.03);
}

main {
  display: grid;
  gap: 20px;
  margin-top: 20px;
}

.grid {
  display: grid;
  gap: 16px;
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.panel {
  border-radius: 24px;
  padding: 24px;
}

.card {
  min-height: 160px;
}

.card p,
.panel p,
.checklist {
  color: var(--muted);
  line-height: 1.7;
}

.panel h2,
.card h2 {
  margin-bottom: 12px;
}

.checklist {
  margin: 16px 0 0;
  padding-left: 20px;
}

#roadmap-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 18px;
}

.roadmap-phase {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 20px;
  padding: 18px;
}

.roadmap-phase h3 {
  margin: 0 0 10px;
}

.roadmap-phase ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.7;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 24px 4px 0;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 840px) {
  .hero {
    padding: 28px;
  }

  .grid.three,
  #roadmap-grid {
    grid-template-columns: 1fr;
  }

  .footer {
    flex-direction: column;
  }
}