:root { color-scheme: light; font-family: system-ui, -apple-system, sans-serif; color: #20252b; background: #fff; }
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.75; letter-spacing: 0; }
header, main, footer { max-width: 800px; margin: auto; padding: 24px; }
header { display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid #e1e5e8; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; color: #20252b; text-decoration: none; }
.brand img { width: 40px; height: 40px; object-fit: contain; }
nav { display: flex; flex-wrap: wrap; gap: 12px 20px; }
a { color: #14644f; text-underline-offset: 3px; overflow-wrap: anywhere; }
a:focus-visible { outline: 3px solid #167cba; outline-offset: 4px; }
h1 { font-size: 32px; line-height: 1.3; margin: 16px 0; overflow-wrap: anywhere; }
h2 { font-size: 23px; line-height: 1.4; margin-top: 32px; }
h3 { font-size: 18px; }
.lead { font-size: 19px; color: #48535d; }
section { border-top: 1px solid #e1e5e8; margin-top: 28px; }
li { margin: 10px 0; }
blockquote { margin: 20px 0; padding: 12px 20px; border-left: 3px solid #167cba; background: #f3f8fb; }
code { overflow-wrap: anywhere; }
pre { padding: 16px; background: #f3f8fb; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 14px; }
footer { border-top: 1px solid #e1e5e8; color: #48535d; font-size: 14px; }
@media (max-width: 480px) { header, main, footer { padding: 20px; } h1 { font-size: 28px; } header { align-items: flex-start; } }