:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172132;
  background: #f3f6f8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  line-height: 1.6;
}

header, main, footer {
  width: min(760px, calc(100% - 40px));
  margin-inline: auto;
}

header {
  padding: 48px 0 18px;
}

.brand {
  color: #0b5b6b;
  font-weight: 750;
  letter-spacing: .02em;
}

main {
  background: #fff;
  border: 1px solid #dce4e8;
  border-radius: 14px;
  box-shadow: 0 8px 28px rgba(20, 48, 60, .07);
  padding: clamp(24px, 5vw, 48px);
}

h1, h2 { line-height: 1.2; }
h1 { margin-top: 0; font-size: clamp(2rem, 6vw, 3rem); }
h2 { margin-top: 2rem; font-size: 1.22rem; }
a { color: #086b7b; }
code { background: #edf3f5; padding: .12rem .35rem; border-radius: 4px; }
.notice { border-left: 4px solid #13a0ae; padding-left: 16px; }

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 28px;
}

footer {
  color: #53626d;
  font-size: .9rem;
  padding: 22px 0 48px;
}