:root {
  --background: 0 0% 100%;
  --foreground: 215 25% 15%;
  --primary: 215 70% 18%;
  --primary-foreground: 0 0% 100%;
  --secondary: 38 92% 50%;
  --muted-foreground: 215 15% 45%;
  --border: 215 20% 88%;
}
* { box-sizing: border-box; letter-spacing: 0; }
body { margin: 0; background: hsl(var(--background)); color: hsl(var(--foreground)); font: 18px/1.8 "Open Sans", Arial, sans-serif; }
header, footer { background: hsl(var(--primary)); color: hsl(var(--primary-foreground)); }
header nav { max-width: 1120px; margin: auto; padding: 22px 24px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
header a, footer a { color: inherit; text-decoration: none; }
.brand { font: 800 28px/1.2 Montserrat, Arial, sans-serif; }
main { max-width: 900px; padding: 32px 24px 64px; margin: auto; }
a { color: hsl(var(--primary)); text-underline-offset: 4px; }
a:focus-visible { outline: 3px solid hsl(var(--secondary)); outline-offset: 4px; }
.breadcrumb, aside { font-size: 16px; }
h1, h2, h3 { font-family: Montserrat, Arial, sans-serif; line-height: 1.25; overflow-wrap: anywhere; }
h1 { font-size: 40px; margin: 30px 0; }
h2 { font-size: 28px; margin: 44px 0 18px; }
h3 { font-size: 22px; margin: 30px 0 14px; }
figure { margin: 0 0 32px; }
img { display: block; width: 100%; height: auto; }
p { margin: 0 0 22px; }
ul { padding-left: 26px; }
li { margin-bottom: 8px; }
aside { border-top: 1px solid hsl(var(--border)); padding-top: 24px; margin-top: 40px; color: hsl(var(--muted-foreground)); }
footer { padding: 24px; text-align: center; }
@media (max-width: 600px) {
  body { font-size: 17px; }
  main { padding: 24px 20px 40px; }
  h1 { font-size: 30px; }
  h2 { font-size: 24px; }
  h3 { font-size: 20px; }
}