:root {
  --bg: #fafafa;
  --fg: #111;
  --muted: #555;
  --accent: #2a4d8f;
  --card-bg: #fff;
  --card-border: #e5e5e5;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
}

.page-header,
main,
.page-footer {
  max-width: 64rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-header {
  padding-top: 4rem;
  padding-bottom: 2rem;
}

.kicker {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.02em;
}

.lead {
  max-width: 40rem;
  font-size: 1.1rem;
  color: var(--muted);
}

.design-grid {
  list-style: none;
  padding: 0;
  margin: 2rem 0 4rem;
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
}

.design-card a {
  display: block;
  padding: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: inherit;
  text-decoration: none;
  height: 100%;
  transition: border-color 120ms ease, transform 120ms ease;
}

.design-card a:hover,
.design-card a:focus {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.design-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}

.design-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

code {
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 0.85em;
  background: rgba(0, 0, 0, 0.05);
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

.page-footer {
  padding: 2rem 1.5rem 4rem;
  border-top: 1px solid var(--card-border);
  color: var(--muted);
  font-size: 0.85rem;
}