* { box-sizing: border-box; }
html { color-scheme: light; }
body { margin: 0 auto; padding: 0 1.25rem; max-width: 52rem; color: #202b36; background: #fcfcfa; font: 1.05rem/1.7 system-ui, sans-serif; }
header { padding: 1.5rem 0; border-bottom: 1px solid #d3d9df; display: flex; flex-wrap: wrap; gap: 1rem 2rem; align-items: center; justify-content: space-between; }
.brand { font-weight: 700; text-decoration: none; color: #202b36; }
nav { display: flex; flex-wrap: wrap; gap: 1.25rem; }
a { color: #174e87; text-underline-offset: .18em; }
a:focus-visible { outline: 3px solid #174e87; outline-offset: 4px; }
main { padding: 2rem 0 3rem; }
h1 { font-size: clamp(2rem, 7vw, 2.7rem); line-height: 1.15; margin: .4rem 0 1.5rem; letter-spacing: -.025em; }
h2 { font-size: 1.25rem; line-height: 1.3; margin-top: 2rem; }
.lead { font-size: 1.2rem; }
code { overflow-wrap: anywhere; }
footer { padding: 1.25rem 0 2rem; border-top: 1px solid #d3d9df; color: #53606b; font-size: .9rem; }