/* Base typography */
:root { --maxw: 72ch; }
* { box-sizing: border-box; }
html { font-size: 16px; }
body {
  margin: 0;
  padding: 2rem 1rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
               Ubuntu, Cantarell, "Helvetica Neue", Arial, "Apple Color Emoji",
               "Segoe UI Emoji", "Segoe UI Symbol";
  line-height: 1.65;
  color: #111;
  background: #fff;
}
main, .container { max-width: var(--maxw); margin: 0 auto; }
h1, h2, h3 { line-height: 1.25; margin: 1.5rem 0 .75rem; }
h1 { font-size: clamp(1.8rem, 3.2vw, 2.4rem); }
h2 { font-size: clamp(1.4rem, 2.6vw, 1.8rem); }
h3 { font-size: clamp(1.2rem, 2.0vw, 1.4rem); }
p { margin: 0 0 1rem; }
ul, ol { padding-left: 1.25rem; }
a { color: #0b5fff; text-decoration: none; }
a:hover { text-decoration: underline; }
header, nav, footer { max-width: var(--maxw); margin: 0 auto 1rem; padding: .5rem 0; }
hr { border: 0; border-top: 1px solid #e5e5e5; margin: 2rem 0; }
img { max-width: 100%; height: auto; display: block; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; }
pre { overflow: auto; background: #f7f7f7; padding: 1rem; border-radius: .5rem; }
.article { max-width: var(--maxw); margin: 0 auto; }
.small { font-size: .95rem; color: #444; }
@media (min-width: 768px) { body { padding: 3rem 1.25rem; } }