:root { color-scheme: dark; font-family: system-ui, sans-serif; color: #e4e4e7; background: #101114; }
* { box-sizing: border-box; }
body { margin: 0; }
header, main, footer { max-width: 960px; margin: auto; padding: 24px; }
header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; border-bottom: 1px solid #303239; }
header > a { font-size: 1.3rem; font-weight: 700; text-decoration: none; }
nav { display: flex; flex-wrap: wrap; gap: 18px; }
a { color: #61dafb; text-underline-offset: 4px; }
a:hover { color: #b3edff; }
a:focus-visible { outline: 2px solid #61dafb; outline-offset: 5px; }
main { line-height: 1.75; min-height: 65vh; }
h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.15; letter-spacing: -.035em; }
h2 { margin-top: 2rem; font-size: 1.3rem; color: #fafafa; }
.intro { font-size: 1.2rem; color: #d4d4d8; }
.date { color: #a1a1aa; font-size: .9rem; }
.button { display: inline-block; background: #61dafb; color: #182009; padding: 10px 20px; border-radius: 8px; font-weight: 650; text-decoration: none; }
.button:hover { color: #182009; background: #8ee5ff; }
li { margin-bottom: .6rem; }
code { overflow-wrap: anywhere; }
footer { border-top: 1px solid #303239; font-size: .9rem; color: #a1a1aa; line-height: 1.7; }
@media (max-width: 600px) { header, main, footer { padding: 20px; } }