:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #5c5c5c;
  --rule: #e4e4e4;
  --accent: #1f5fbf;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.55;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111214;
    --fg: #ececec;
    --muted: #a3a3a3;
    --rule: #2a2b2e;
    --accent: #7fb0ff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header, main, .site-footer {
  width: 100%;
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
}
.brand {
  font-weight: 700;
  text-decoration: none;
  color: inherit;
}
nav { display: flex; gap: 1.25rem; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--fg); }

main { flex: 1; }

.hero {
  padding: 3rem 0 2.5rem;
  border-bottom: 1px solid var(--rule);
}
h1 {
  font-size: clamp(2rem, 6vw, 3rem);
  line-height: 1.1;
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}
.lede {
  font-size: 1.25rem;
  margin: 0 0 0.75rem;
}
.hero p { color: var(--muted); }
.hero .lede { color: var(--fg); }

section { padding: 2rem 0; }
section + section { border-top: 1px solid var(--rule); }
h2 {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 1rem;
}
h3 { font-size: 1.25rem; margin: 0 0 0.25rem; }

.products { list-style: none; margin: 0; padding: 0; }
.products li + li { margin-top: 1.5rem; }
.products p { margin: 0; color: var(--muted); }

a { color: var(--accent); }

.site-footer {
  border-top: 1px solid var(--rule);
  padding-top: 1.25rem;
  padding-bottom: 1.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.site-footer p { margin: 0; }
.products h3 a { color: inherit; text-decoration: underline; text-decoration-color: var(--muted); text-underline-offset: 0.2em; }
.products h3 a:hover { text-decoration-color: var(--accent); }