:root {
  color-scheme: light;
  --background: #f5f4f2;
  --surface: #ffffff;
  --text: #202020;
  --muted: #5f6067;
  --border: #deddda;
  --accent: #3154d9;
}

* { box-sizing: border-box; }

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

main {
  width: min(880px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 72px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-bottom: 20px;
  font-size: 14px;
}

.document {
  padding: clamp(22px, 5vw, 48px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 16px 46px rgba(32, 32, 32, 0.06);
}

h1, h2 { line-height: 1.2; }
h1 { margin: 0 0 4px; font-size: clamp(30px, 5vw, 42px); }
h2 { margin: 34px 0 10px; font-size: 21px; }
p, li { color: var(--muted); }
ul { padding-left: 22px; }
a { color: var(--accent); }
.meta { margin: 0 0 28px; font-size: 14px; }
.callout {
  margin: 22px 0;
  padding: 18px;
  background: #f1f4ff;
  border: 1px solid #d7dfff;
  border-radius: 14px;
}
.button {
  display: inline-block;
  margin: 6px 0;
  padding: 11px 16px;
  color: #fff;
  background: var(--accent);
  border-radius: 10px;
  font-weight: 650;
  text-decoration: none;
}

@media (max-width: 560px) {
  main { width: min(100% - 20px, 880px); padding-top: 18px; }
  .document { border-radius: 14px; }
}