:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --surface-soft: #f1f3f6;
  --text: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --accent: #0f172a;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-mono, 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif);
  color: var(--text);
  background: linear-gradient(180deg, #fafbfc 0%, #f6f7f9 100%);
}

.site-shell {
  min-height: 100vh;
}

.section-wrap {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section-block {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.9rem;
}

.soft-card {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 0.9rem;
}

.nav-link {
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  color: #334155;
  transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: #0f172a;
}

.nav-link-strong {
  color: #0f172a;
  font-weight: 600;
}

.pillar-card,
.proof-card {
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.pillar-card:hover,
.proof-card:hover {
  transform: translateY(-2px);
  border-color: #cbd5e1;
  box-shadow: 0 12px 28px -22px rgba(15, 23, 42, 0.35);
}

.metric-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #64748b;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: #e2e8f0;
  color: #0f172a;
  font-size: 0.78rem;
  font-weight: 600;
}

.footer-link {
  color: #334155;
  transition: color 0.2s ease;
}

.footer-link:hover,
.footer-link:focus-visible {
  color: #0f172a;
}

.cta-input {
  border: 1px solid #cbd5e1;
  border-radius: 0.75rem;
  background: #ffffff;
  padding: 0.75rem 0.9rem;
  width: 100%;
}

.cta-input:focus-visible {
  outline: 2px solid #0f172a;
  outline-offset: 1px;
}

@media (prefers-color-scheme: dark) {
  body.dark-ready {
    background: #0b1120;
    color: #e2e8f0;
  }

  body.dark-ready .card,
  body.dark-ready .soft-card {
    background: #0f172a;
    border-color: #1e293b;
  }

  body.dark-ready .nav-link,
  body.dark-ready .footer-link,
  body.dark-ready .metric-label {
    color: #cbd5e1;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .pillar-card,
  .proof-card,
  .nav-link,
  .footer-link {
    transition: none;
  }
}