/* ── Shared a16z-editorial design system — Booker maroon/crest accent ── */
:root {
  --cream: #F3EFE8;
  --ink-deep: #09080D;
  --ink: #1A1612;
  --gold: #C9A84C;
  --green: #5DAA78;
  --divider: rgba(9, 8, 13, 0.14);
  --font-serif: 'Fraunces', Georgia, serif;
  --font-sans: 'Barlow', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Booker & Co accent — maroon / crest, apex posture */
  --accent: #6B1E23;
  --accent-2: var(--gold);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body { background: var(--cream); color: var(--ink); font-family: var(--font-sans); line-height: 1.65; -webkit-font-smoothing: antialiased; }
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 600; line-height: 1.15; color: var(--ink-deep); }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--ink-deep); }
.mono { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.06em; }
.eyebrow { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); }
.divider { border: none; border-top: 1px solid var(--divider); }
.container { max-width: 1160px; margin: 0 auto; padding: 0 2.5rem; }
section { padding: 6rem 0; }
section + section { border-top: 1px solid var(--divider); }

.btn-primary { display: inline-block; padding: 0.75rem 1.75rem; border: 1px solid var(--ink-deep); background: var(--ink-deep); color: var(--cream); font-size: 0.875rem; font-weight: 500; letter-spacing: 0.04em; cursor: pointer; transition: background 0.2s; }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); }
.btn-secondary { display: inline-block; padding: 0.75rem 1.75rem; border: 1px solid var(--divider); background: transparent; color: var(--ink); font-size: 0.875rem; font-weight: 500; letter-spacing: 0.04em; cursor: pointer; transition: border-color 0.2s, color 0.2s; }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

.site-nav { border-bottom: 1px solid var(--divider); background: var(--cream); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 1.25rem 2.5rem; max-width: 1160px; margin: 0 auto; }
.nav-mark { display: flex; align-items: center; gap: 0.6rem; font-family: var(--font-serif); font-weight: 600; font-size: 1.1rem; color: var(--ink-deep); }
.logo-slot { height: 1.9rem; width: auto; object-fit: contain; display: inline-block; vertical-align: middle; }
.nav-links { display: flex; gap: 2rem; }
.nav-links a { font-size: 0.875rem; color: var(--ink); }
.nav-links a:hover { color: var(--accent); }
.site-footer { border-top: 1px solid var(--divider); padding: 3rem 0 2rem; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 2rem; }
.footer-legal { opacity: 0.65; font-size: 0.8rem; margin-top: 0.5rem; }

.hero { padding-top: 7rem; }
.hero-headline { font-size: clamp(2rem, 4vw, 3.2rem); margin: 1rem 0 1.25rem; max-width: 36rem; }
.hero-sub { max-width: 34rem; opacity: 0.85; margin-bottom: 2rem; }
.hero-ctas { display: flex; gap: 1rem; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1.5rem; margin-top: 2.5rem; }
.card { border: 1px solid var(--divider); padding: 1.75rem; }
.card h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.card p { font-size: 0.92rem; opacity: 0.85; }

@media (max-width: 768px) {
  .container, .nav-inner { padding: 0 1.25rem; }
  section { padding: 4rem 0; }
  .nav-links { gap: 1rem; }
}