:root {
  --bg: #fafafa;
  --fg: #18181b;
  --muted: #71717a;
  --accent: #5b21b6;
  --accent-fg: #ffffff;
  --card: #ffffff;
  --border: #e4e4e7;
  --max-width: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0b;
    --fg: #f4f4f5;
    --muted: #a1a1aa;
    --card: #18181b;
    --border: #27272a;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

main { max-width: var(--max-width); margin: 0 auto; padding: 5rem 1.5rem 4rem; }

h1 { font-size: 2.6rem; line-height: 1.1; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 0.75rem; }
h2 { font-size: 1.35rem; font-weight: 600; margin: 3rem 0 1rem; letter-spacing: -0.01em; }
h3 { font-size: 1.1rem; font-weight: 600; margin: 0 0 0.5rem; }

.tagline { font-size: 1.2rem; color: var(--muted); margin: 0 0 1.5rem; max-width: 54ch; }
.lede { font-size: 1.05rem; max-width: 60ch; }

.product {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease;
}
.product:hover { border-color: var(--accent); }
.product h3 { color: var(--accent); }
.product p { margin: 0.25rem 0 0; color: var(--muted); }
.product .arrow { color: var(--accent); font-weight: 600; }

.contact a { font-weight: 600; }

footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.7;
}

.muted { color: var(--muted); }
a { color: var(--accent); }
@media (prefers-color-scheme: dark) {
  a { color: #c4b5fd; }
  .product h3 { color: #c4b5fd; }
}