:root {
  --bg: #faf8f5;
  --fg: #1f1b16;
  --muted: #6b6258;
  --accent: #9a5b2b;
  --card: #ffffff;
  --border: #e6e0d8;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17140f;
    --fg: #f1ece4;
    --muted: #a99f92;
    --accent: #d89458;
    --card: #211d17;
    --border: #3a332a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  background: var(--bg);
  color: var(--fg);
}

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

.site-header,
.site-footer,
main {
  max-width: 64rem;
  margin: 0 auto;
  padding: 1rem 1.25rem;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand {
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--fg);
}

nav { display: flex; gap: 1.25rem; }
nav a { text-decoration: none; color: var(--muted); }
nav a:hover { color: var(--fg); }

.hero {
  text-align: center;
  padding-block: 5rem 4rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  margin: 0;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: 1.2rem;
  color: var(--muted);
}

.button {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
}

.features article {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.25rem;
}

.features h2 { margin-top: 0; font-size: 1.15rem; }

.download {
  text-align: center;
  padding-block: 4rem;
}

.site-footer {
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
}