/* Landing page — light theme, matches insightOS brand */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600&family=Instrument+Serif&display=swap');

:root {
  --bg: #fafaf8;
  --surface: #ffffff;
  --ink: #111110;
  --ink-muted: #6b6b67;
  --ink-faint: #c8c8c4;
  --amber: #d97706;
  --amber-light: #fef3c7;
  --border: #e8e8e4;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-6: 3rem;
  --space-8: 4rem;
  --space-12: 6rem;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-sans); background: var(--bg); color: var(--ink); line-height: 1.6; }
::selection { background: var(--amber-light); color: var(--ink); }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 var(--space-4); }

/* Nav */
.site-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250,250,248,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px; margin: 0 auto; padding: 0 var(--space-4);
  height: 56px; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { font-family: var(--font-serif); font-size: 1.125rem; letter-spacing: -0.02em; }
.nav-links { display: flex; gap: var(--space-4); font-size: 0.875rem; color: var(--ink-muted); }
.nav-links a:hover { color: var(--ink); }
.btn-cta {
  background: var(--ink); color: #fff;
  padding: 0.5rem 1.25rem; border-radius: 6px;
  font-size: 0.875rem; font-weight: 500;
  transition: opacity 0.15s;
}
.btn-cta:hover { opacity: 0.8; }

/* Hero */
.hero { padding: var(--space-12) 0; }
.hero-eyebrow {
  display: inline-block;
  background: var(--amber-light); color: var(--amber);
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem; border-radius: 999px;
  margin-bottom: var(--space-3);
  text-transform: uppercase;
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.1; letter-spacing: -0.03em;
  max-width: 700px;
  margin-bottom: var(--space-3);
}
.hero-sub {
  font-size: 1.125rem; color: var(--ink-muted);
  max-width: 520px; line-height: 1.7;
  margin-bottom: var(--space-4);
}
.hero-actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.btn-primary {
  background: var(--ink); color: #fff;
  padding: 0.75rem 1.75rem; border-radius: 8px;
  font-size: 1rem; font-weight: 500;
  transition: opacity 0.15s;
}
.btn-primary:hover { opacity: 0.85; }
.btn-secondary {
  background: var(--surface); color: var(--ink);
  border: 1px solid var(--border);
  padding: 0.75rem 1.75rem; border-radius: 8px;
  font-size: 1rem; font-weight: 500;
  transition: border-color 0.15s;
}
.btn-secondary:hover { border-color: var(--ink); }

/* Features */
.features { padding: var(--space-8) 0; }
.section-label {
  font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--ink-muted); font-weight: 500; margin-bottom: var(--space-2);
}
.features h2 {
  font-family: var(--font-serif);
  font-size: 2rem; letter-spacing: -0.02em; line-height: 1.2;
  margin-bottom: var(--space-6);
  max-width: 480px;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-3);
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-4);
}
.feature-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.5rem; }
.feature-card p { font-size: 0.875rem; color: var(--ink-muted); line-height: 1.6; }
.feature-icon {
  width: 40px; height: 40px; border-radius: 8px;
  background: var(--amber-light); color: var(--amber);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem; margin-bottom: 1rem;
}

/* CTA band */
.cta-band {
  background: var(--ink); color: #fff;
  padding: var(--space-8) 0;
  text-align: center;
}
.cta-band h2 {
  font-family: var(--font-serif);
  font-size: 2.5rem; letter-spacing: -0.02em; line-height: 1.2;
  margin-bottom: var(--space-2);
}
.cta-band p { color: #a0a09c; font-size: 1.125rem; margin-bottom: var(--space-4); }
.cta-band .btn-primary { background: var(--amber); color: #111; }

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: var(--space-4) 0;
  font-size: 0.8rem; color: var(--ink-muted);
}
.footer-inner { max-width: 1100px; margin: 0 auto; padding: 0 var(--space-4); display: flex; justify-content: space-between; align-items: center; }