:root {
  --ground: #ECEEF3;
  --text: #1C1F26;
  --muted: #555B69;
  --shadow: rgba(160, 168, 190, 0.6);
  --highlight: rgba(255, 255, 255, 0.95);
  --sage-bg: #C1EBCE; --sage-fg: #1B472D;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ground: #1B1D22;
    --text: #F1F2F5;
    --muted: #A2A8B4;
    --shadow: rgba(0, 0, 0, 0.6);
    --highlight: rgba(255, 255, 255, 0.05);
    --sage-bg: #2A4533; --sage-fg: #C3F3D2;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 880px; margin: 0 auto; padding: 56px 16px 40px; }
a { color: inherit; }

h1 { font-size: clamp(2.2rem, 7vw, 3.4rem); line-height: 1.1; margin: 0 0 12px; letter-spacing: -0.02em; }
h2 { font-size: 1.4rem; margin: 48px 0 16px; }

footer { margin-top: 64px; text-align: center; color: var(--muted); font-size: .9rem; }
footer p { margin: 4px 0; }