:root {
  color-scheme: light dark;
  --background: #f5f7fa;
  --surface: #ffffff;
  --text: #18202a;
  --muted: #586675;
  --accent: #2864dc;
  --border: #dce3ea;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #10151b;
    --surface: #171e26;
    --text: #edf3f8;
    --muted: #aab6c2;
    --accent: #8ab4ff;
    --border: #303b47;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

main {
  width: min(820px, calc(100% - 32px));
  margin: 48px auto;
  padding: clamp(24px, 5vw, 56px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 14px 40px rgb(0 0 0 / 8%);
}

header { margin-bottom: 40px; }
section { margin: 36px 0; }

h1, h2 {
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 6vw, 3.4rem); }
h2 { margin-top: 0; font-size: 1.35rem; }

.eyebrow {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lede {
  max-width: 680px;
  color: var(--muted);
  font-size: 1.2rem;
}

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

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 36px 0;
}

nav a {
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
}

footer {
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.95rem;
}